Question

Resolva as equações:
A)x+40=90

B)x+x+x=180

C)x+2x+60=180

D)y+2y+20-50=180

E)30+x+40=90

F)25-55+90=x-10

ME AJUDEM POR FAVOR !!!

Answer 1

a) x+40=90
x=90-40
x=50

b) x+x+x=180
3x=180
x=180/3
x= 60

c) x+2x+60=180
3x=180-60
3x=120
x= 40

d) y+2y+20-50=180
3y=180-20+50
3y=210
y= 210/3
y= 70

e) 30+x+40=90
x=90-30-40
x=20

f) 25-55+90=x-10
25-55+90+10=x
70=x ou x=70