Question

preciso da conta e a reposta

A) 6×+12=5×+20 B) 5×-40=×+20 C) 3×+15=×+75 D) 7×-25=3×+55 E) 12×-35=5×+14 ​

Answer 1

Resposta:

A) 6×+12=5×+20

6x-5x=20-12

x=8

B) 5×-40=×+20

5x-x=20+40

4x=60

x=60/4

x=15

C) 3×+15=×+75

3x-x=75-15

2x=60

x=60/2

x=30

D) 7×-25=3×+55

7x-3x=55+25

4x=80

x=80/4

x=20

E) 12×-35=5×+14 ​

12x-5x=14+35

7x=49

x=49/7

x=7