Question

3x-25=x-4
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Answer 1

$3x - 25 = \times - 4 \times 21 \\ 2 \times = 10 \\ 1 \\ 2 . \times = 10.5$

Answer 2

Resposta:

Explicação passo a passo:

$3x-25=x-4\\3x-25+25=x-4+25\\3x=x+21\\3x-x=x+21-x\\2x=21\\\frac{2x}{2}=\frac{21}{2}\\\\x=\frac{21}{2}$