Question

•3(x+4)-2=5(2x-1)-6
•4(2x+1)+5=3(3x+7)-x
•20-(x+5)=3(3x-3)​

Answer 1

Respuesta:

$3(x + 4) - 2 = 5(2x - 1) - 6 \\ 3x + 12 - 2 = 10x - 5 - 6 \\ 3x + 10 = 10x - 11 \\ 10 + 11 = 10x - 3x \\ 21 = 7x \\ 3 = x$

$20 - (x + 5) = 3(3x - 3) \\ 20 - x - 5 = 9x - 9 \\ 15 - x = 9x - 9 \\ 15 + 9 = 9x + x \\ 24 = 10x \\ \frac{24}{10} = x \\ \frac{12}{5} = x$