Question

plis


b. -56 = 7. (X - 4)

C. (2x-3) 4 = 12

d. (15x + 10):5= 8​

Answer 1

Respuesta:

$a) - 56 = 7(x - 4) \\ - 56 = 7x - 28 \\ - 56 + 28 = 7x \\ - 28 = 7x \\ \frac{ - 28}{7} = x \\ - 4 = x$

$c)(2x - 3)4 = 12 \\ 8x - 12 = 12 \\ 8x = 12 + 12 \\ 8x = 24 \\ x = \frac{24}{8} \\x = 3$

$d)(15x + 10) \div 5 = 8 \\ 3x + 2 = 8 \\ 3x = 8 - 2 \\ 3x = 6 \\ x = \frac{6}{3} \\ x = 2$