Question

resolva as equações do 1°grau :
b)2(x+6)=40
c)4x-3=80
d)x+10=20
e) 5x+6=70
f)3x+6=80​

Answer 1

b) 2(x+6)=40

2x+12=40

2x=40-12

2x=28

x=28/2

x=14

c)4x-3=80

4x=80+3

4x=83/4

x=20.75

d)x+10=20

x=20-10

x=10

e)5x+6=70

5x=70-6

5x=64

x=64/5