Question

Simplify the expression and then evaluate it for the given value of the variable:

12+7x−(1−3) for x=−1.7

Answer 1

25.9

Explanation:

12+7x−(1−3) (evaluate parentheses first)

= 12+ 7x - (-2)

= 12+ 7x + 2

= 14+ 7x

When x = 1.7, equation becomes

14+ 7(1.7)

= 14 + 11.9

= 25.9