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Question

Find the value of x if (20x+3)−(5x−7)=40.

A
5
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B
3
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C
2
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D
-2
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Solution

The correct option is C 2
We have to find the value of x in the given equation.

(20x+3)(5x7)=40

Let's first open the brackets
20x+35x+7=40

Now, transpose the variables on the one side and constants on the other side of the equation.
20x5x=4037
15x=30 [Transposing 15 to RHS]
x=3015=2

Hence, option 'c' is correct.

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