Question

SOCORRO⚠️⚠️⚠️⚠️⚠️ Quanto é 5x + 2y = 21? B)x - 9 = 23? C)10x - y= 48

Answer 1

Resposta:

a)5x+2y=21

  5.3=15

  2.3=6

  15+6=21

b)x-9=23

  x=23-9

  x=14

c)10x-y=48

  x=10.5=50

  y=2

  50-2=48