Question

a) -3(x-1) +4 = 6 (x-1) -5

b) 7x -4 (2x-1) +7=-2 (1-2x) +3

Answer 1

Respuesta:

$a) - 3(x - 1) + 4 = 6(x - 1) - 5 \\ - 3x + 3 + 4 = 6x - 6 - 5 \\ - 3x + 7 = 6x - 11 \\ 7 + 11 = 6x + 3x \\ 18 = 9x \\ \frac{18}{9} = x \\ 2 = x$

$b)7x - 4(2x - 1) + 7 = - 2(1 - 2x) + 3 \\ 7x - 8x + 4 + 7 = - 2 + 4x + 3 \\ - x + 11 = 1 + 4x \\ 11 - 1 = 4x + x \\ 10 = 5x \\ \frac{10}{5} = x \\ 2 = x$