Question

a)-×+20=30
b)2×+1=23
c)-×-6=3
d)-4×+6=-30​

Answer 1

Explicação passo-a-passo:

a) -x+20=30

x=20-30

x=-10

b)2x+1=23

2x=22

x=11

c)-x-6=3

x=-6-3

x=-9

d)-4x+6=30

4x=6-30

4x=-24

x=-6