Question

е) 20 + 6x = -2х + 26
g) 3х7 =2x+5​

Answer 1

Resposta:

$20+6x = - 2x + 26\quad :\quad x=\frac{3}{4}\quad \left(\mathrm{Decimal}:\quad x=0.75\right)$

$3*7=2x+5 : x = \frac{9}{2} (Decimal: x = 0.45)$

Explicação passo-a-passo:

letra e

$8x=26 - 20\\\\8x = 6\\\\x=\frac{6}{8}\\\\Simplificando:\\\\x=\frac{3}{4}$

letra g

$3*7=2x+5\\\\14-5=2x\\\\2x=9\\\\x = \frac{9}{2}$