Question

what expression is equivalent to 2x+9-x+3? show your answer is correct by substituting a value for x.

Answer 1

Explanation:

Given

2x + 9 - x + 3

What's equivalent

Solution

2x - x + 9 + 3 The terms have been rearranged. Combine

x + 12

Test.

x = 5

2(5) + 9 - 5 + 3

10 + 9 - 5 + 3

19 - 5 + 3

14 + 3

17

x + 12

5 + 12 = 17