Question

resolva as equações:
a) 4x+20=20
b) -3x= -60
c) 2x-1=9
d) 3x-1=2x
e) x/2=10

Answer 1

a)4x=20-20.
4x=0.
x=0/4.
x=0

b) x= -60/-3.
x= + 20

c) 2x=9+1.
2x=10.
x=10/2.
x=5

d) 3x-2x=1.
x=1

e) x=10.2
x=20