Question

me ajudem, por favor
a) 4x+10=20+2x

b) x÷2=20

c) 2x-10= x+30

d) x÷3=20

f) x+2=4-x

g) x÷5 - x÷2 = 80

Answer 1

a) 4x+10=20+2x
4x-2x= 20-10
2x= 10
x= 10/2
x=5

b)x÷2=20
x=20×2
x= 40

c)2x-10=x+30
2x-x= 30+10
1x=40
x=40

d)x÷3=20
x= 20×3
x= 60

f)x+2=4-x
x+x= 4-2
2x=2
x=2/2
x=1

g)x÷5 - x÷2=80

1000÷5 - 240÷2=80

200 - 120=80