Question

A) 4x+10+x = 60+y
B) 3(x+20)= 120
C) 5x+30= 2x+120
D) 3x+2x+20= 120

Answer 1

Boa tarde!!

a)4x +10 +x = 60+x
4x = 60 -10
x = 50/4
x = 12,5

b) 3(x +20) = 120
3x +60 = 120
3x = 120 -60
x = 60 /3 
x = 20

c) 5x +30 = 2x +120
5x -2x = 120 -30
3x = 90
x = 90 /3
x = 30

d) 3x +2x +20 = 120
5x = 120 -20
x = 100 / 5
x = 20

Bons estudos!

Answer 2

A) 4X+10+X=60+y
4X++X-y=60-10
5x-y=50
4x=50
X=50÷4
X=12,5

B) 3(x+20)=120
3x+60=120
3x=120-60
3x=60
X=60÷3
X=20


C) 5x+30=2x+120
5x-2x=120-30
3x=90
x=90÷3
X=30

D) 3x+2x+20=120
3x+2x=120-20
5x=100
x=100÷5
X= 20


Bons estudos!♥