Question

C) 4X + 8 = 12 D) 10X – 2X = 24 E) X + 2X + 9 = 30resposta por favor

Answer 1

Resposta:

C) x=1

D) x=3

E) x=7

Explicação passo-a-passo:

$C) 4x+8=12\\ 4x=12-8\\ 4x=4\\ x=4/4\\ x=1$

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$D)10x-2x=24\\8x=24\\x=24/8\\x=3$

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$E) x+2x+9=30\\x+2x=30-9\\3x=21\\x=21/3\\x=7$