Question

A ) 3×+2+2×=12
B ) 4. (×+1)=8×+3

Answer 1

Respuesta:

A.-

$3x + 2 + 2x = 12 \\ 3x + 2x = 12 - 2 \\ 5x = 10 \\ x = \frac{10}{5} \\ x = 2$

B.-

$4(x + 1) = 8x + 3 \\ 4x + 4 = 8x + 3 \\ 4x - 8x = 3 - 4 \\( - 1) - 4x = - 1 \: \: \: ( - 1) \\ 4x = 1 \\ x = \frac{1}{4}$