Question

Me ajudem pfv ༎ຶ‿༎ຶ

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Answer 1

Resposta:

A) $5x-\left(x-2\right)=2-3\left(x+5\right)\quad :\quad x=-\frac{15}{7}$

B) $10-\left(2x+1\right)=4\left(2x+3\right)\quad :\quad x=-\frac{3}{10}$

Explicação passo a passo:

A)

$5x-\left(x-2\right)=2-3\left(x+5\right)\\4x+2=-3x-13\\4x+2-2=-3x-13-2\\4x=-3x-15\\4x+3x=-3x-15+3x\\7x=-15\\\frac{7x}{7}=\frac{-15}{7}\\x=-\frac{15}{7}$

B)

$10-\left(2x+1\right)=4\left(2x+3\right)\\-2x+9=8x+12\\-2x+9-9=8x+12-9\\-2x=8x+3\\-2x-8x=8x+3-8x\\-10x=3\\\frac{-10x}{-10}=\frac{3}{-10}\\x=-\frac{3}{10}$