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-2x + 8 = 18 please help. What does x equal

User Thomas BDX
by
6.0k points

2 Answers

1 vote

Answer:

x = -5

Explanation:

-2x + 8 = 18

Subtract 8 from each side

-2x + 8-8 = 18-8

-2x = 10

Divide each side by -2

-2x/-2 = 10/-2

x = -5

User Amit Nanaware
by
4.9k points
6 votes

Answer:

x = -5

Explanation:

Step 1: Write equation

-2x + 8 = 18

Step 2: Solve for x

  1. Subtract 8 on both sides: -2x = 10
  2. Divide both sides by -2: x = -5

Step 3: Check

Plug in x to verify it's a solution.

-2(-5) + 8 = 18

10 + 8 = 18

18 = 18

User Andreus
by
5.2k points