Question

Solving the equation x + 2(x – 5) = 320

will need the following steps:
1. x + 2x + 10 = 320
II. 3x + 10 = 320
III.
3x = 310
310
IV.
x =
3
Which step above is incorrect?
A Step
B Step III
C Step IV
D All steps are correct
Lo

Answer 1

A. Step I

Explanation:

Appropriate application of the distributive property would give ...

x +2x -10 = 320 . . . . . . . does not match step I

Further solution steps would be ...

3x -10 = 320

3x = 330

x = 110