3x + 4 = 13 By adding -4 to both sides of the equation we say that +4 and -4 on the left side of this equation ? each other out. Algebra

asked Oct 9, 2019 21.2k views

5 votes

3x + 4 = 13

By adding -4 to both sides of the equation we say that +4 and -4 on the left side of this equation ? each other out.

Algebra

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6 votes

The +4 and the -4 cancel each other out leaving

3x = 9

X = 9

Arthur Hjorth answered Oct 15, 2019

8.0k points

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