If 172- x -5 x -12-1-7 x -8- then the value of - x - is-A- 8B- 2C- 1D- -1

The correct option is C 117(2 x) 5(x+12)/1 7x=8 ⇒ 17(2 x) 5(x+12)=8(1 7x) ⇒ 34 17x 5x 60=8 56x ⇒ 22x 26=8 56x ⇒ 22x+56x=8+26 ⇒ 34x=34 ⇒ x=1 The value of 'x' ...

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Standard VII

Mathematics

Solution of an Equation

If 172- x -5 ...

Question

If $\frac{17 (2 - x) - 5 (x + 12)}{1 - 7 x} = 8$ , then the value of ' $x$ ' is:

8

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Solution

The correct option is C $1$
$\frac{17 (2 - x) - 5 (x + 12)}{1 - 7 x} = 8 \Rightarrow 17 (2 - x) - 5 (x + 12) = 8 (1 - 7 x) \Rightarrow 34 - 17 x - 5 x - 60 = 8 - 56 x \Rightarrow - 22 x - 26 = 8 - 56 x \Rightarrow - 22 x + 56 x = 8 + 26 \Rightarrow 34 x = 34 \Rightarrow x = 1 The value of 'x' is 1.$

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If 17(2−x)−5(x+12)1−7x=8 , then the value of 'x' is:

The correct option is C 117(2−x)−5(x+12)1−7x=8⇒17(2−x)−5(x+12)=8(1−7x)⇒34−17x−5x−60=8−56x⇒−22x−26=8−56x⇒−22x+56x=8+26⇒34x=34⇒x=1The value of 'x' is 1.

If $\frac{17 (2 - x) - 5 (x + 12)}{1 - 7 x} = 8$ , then the value of ' $x$ ' is: