Q. 6. Simplify the expressions and find the value if is equal to
(ii)
If x is equal to 2 the value of 3( x + 2 ) + 5x - 7 = 15
Answer
3(x+2)+5x−7=3x+6+5x−7=3x+5x+6−7 =8x−1 =8×2−1 [Putting x=−1] =16−1 =15.
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