4 years ago

Tony solves the linear equation 3(x - 3) + 2x + 9 = 2x + 2(x - 1) using the step shown below.

Mathematics

1 answer:

Stels [109]4 years ago

6 0

Answer:

He distributed incorrectly.

Step-by-step explanation:

To solve 3(x - 3) + 2x + 9 = 2x + 2(x - 1)

Opening the parenthesis will yield

3x - 9 + 2x + 9 = 2x + 2x - 2

5x = 4x - 2

Subtract 4x from both-side of the equation

5x-4x = 4x -4x- 2

x = -2

The mistake he made is;

3(x - 3) = 3x - 9

Not 3x-3

Also

2(x - 1) = 2x -2

Not 2x-1

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