Q. Solve the following equation by trial and error method: 3m−14=4
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Q. Set up an equation for the following statement: Laxmis father is 49 year old. He is 4 year older than three times Laxmis age.
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Q. Write the following equations in statement forms: 3p+4=25
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Q. Write the following equations in statement forms: 4p−2=18
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Q. Write the following equations in statement forms: p2+2=8
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Q. Set up an equation in the following cases: The teacher tells the class that the highest marks obtained by a student in her class is twice the lowest marks plus 7. The highest score is 87. ( Take the lower score to be l).
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Q. Solve the following equation by trial and error method: 5p+2=17
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Q. Complete the last column of the table:
Sr. No.
Equation
Value
Say, whether the Equation is satisfied. (Yes / No)
(i)
x+3=0
x=2
(ii)
x+3=0
x=0
(iii)
x+3=0
x=−3
(iv)
x−7=1
x=7
(v)
x−7=1
x=8
(vi)
5x=25
x=0
(vii)
5x=25
x=5
(viii)
5x=25
x=−5
(ix)
m3=2
m=−6
(x)
m3=2
m=0
(xi)
m3=2
m=6
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Q. Check whether the value given in the brackets is a solution to the given equation or not: n+5=19(n=1)
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Q. Check whether the value given in the brackets is a solution to the given equation or not: 7n+5=19(n=−2)
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Q. Check whether the value given in the brackets is a solution to the given equation or not: 7n+5=19(n=2)
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Q. Check whether the value given in the brackets is a solution to the given equation or not: 4p−3=13(p=1)
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Q. Check whether the value given in the brackets is a solution to the given equation or not: 4p−3=13(p=−4)
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Q. Check whether p=0 is a solution to 4p−3=13 or not.
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Q. Write equations for the following statements: The sum of numbers x and 4 is 9
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Q. Write equations for the following statements: 2 subtract from y is 8
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Q. Write equations for the following statements: Ten times a is 70.
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Q. Write equations for the following statements: The number b divided by 5 gives 6.
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Q. Write equations for the following statements: Three-fourth of t is 15.
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Q. Write equations for the following statements: Seven times m plus 7 gets you 77.