Question

Podem me ajudar E)2.X +5=15 F)5.x-6= 2x+3 G)5.y-8=2y-1 H)3.x=15÷3

Answer 1

Explicação passo-a-passo:

A) 2·×+5=15

2×+5=15⇒15-5=2×⇒10=2×⇒×=10÷2⇒Resposta⇒x=5

B)5·×-6=2×+3

5×-6=2×+3⇒5×-2×=6+3⇒3×=9⇒x=9÷3⇒Resposta⇒x=3

C)5·y-8=2y-1

5y-8=2y-1⇒5y-2y=8-1⇒3y=7⇒y=7÷3⇒Resposta⇒2,333

D)3·×=15÷3

3×=15÷3⇒3×=5⇒x=5÷3⇒Resposta⇒1,666