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10-01-2018
Mathematics

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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

Respuesta :

ardduttap2bucj ardduttap2bucj

10-01-2018

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

3x = 9

X = 9

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