Question

me ajudem na questão 8 e 9 por favor! ❤

8.
a) x x+2 x+4
b) 2x -1 2× +3
c) 4x-5 4x-5
d) 3x 3x x x x x x

Answer 1

$a)x + (x + 2) + (x + 4) = x + x + 2 + x + 4 = \\ 3x + 6 = 3x = - 6 = x = \frac{ - 6}{3} = - 2 \\ \\ b)(2x - 1) + (2x + 3) = 2x - 1 + 2x + 3 = 4x = 2 \\ x = \frac{2}{4} = 0.5 \\ \\ c)(4x - 5) + (4x - 5) = 4x - 5 + 4x - 5 = 8x - 10 = 8x = 10 \\ x = \frac{10}{8} = 1.25 \\ \\ d)3x + 3x + x + x + x + x + x = 11x$