Write equations for the following statements :
(i) The numbermmultiplied by itself is 4 more than 21.
(ii) 5 subtracted from 2 times a numberygives us 3.

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Solution

$(i) . The required equation is, m \times m = 21 + 4 \Rightarrow m^{2} = 25 (ii) . The required equation is, 2 y - 5 = 3$

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Similar questions

Q. Write each of the following statements as an equation:
(i) 5 times a number equals 40.
(ii) A number increased by 8 equals 15.
(iii) 25 exceeds a number by 7.
(iv) A number exceeds 5 by 3.
(v) 5 subtracted from thrice a number is 16.
(vi) If 12 is subtracted from a number, the result is 24.
(vii) Twice a number subtracted from 19 is 11.
(viii) A number divided by 8 gives 7.
(ix) 3 less than 4 times a number is 17.
(x) 6 times a number is 5 more than the number.

Write equation for the following statements:
(i) The sum of numbers $x$ and $4$ is $9$ .
(ii) $2$ subtracted from $y$ is $8$ .
(iii) Ten times $a$ is $70$
(iv) The number $b$ divided by $5$ gives $6$ .
(v) Three-fourth of $t$ is $15$ .

Question 4(ii)
Write the equation for the following statement:
2 subtracted from y is 8.

Q. Convert the following statements into equations.
(i) 3 added to a number is 11
(ii) 2 subtracted from a number is equal to 15.
(iii) 3 times a number decreased by 2 is 4.
(iv) 2 times the sum of x and 7 is 13

Q. Write each of the following statements by using appropriate grouping symbols:
(i) The sum of a − b and 3a − 2b + 5 is subtracted from 4a + 2b − 7.
(ii) Three times the sum of 2x + y − {5 − (x − 3y)} and 7x − 4y + 3 is subtracted from 3x − 4y + 7.
(iii) The subtraction of x² − y² + 4xy from 2x² + y² − 3xy is added to 9x² − 3y² − xy.

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Write equations for the following statements :(i) The numbermmultiplied by itself is 4 more than 21.(ii) 5 subtracted from 2 times a numberygives us 3.

i. The required equation is,m×m=21+4⇒m2=25ii. The required equation is,2y-5=3

Write equations for the following statements :
(i) The numbermmultiplied by itself is 4 more than 21.
(ii) 5 subtracted from 2 times a numberygives us 3.

$(i) . The required equation is, m \times m = 21 + 4 \Rightarrow m^{2} = 25 (ii) . The required equation is, 2 y - 5 = 3$