Question

ajuda aí namoral só a 4 mesmo

Answer 1

Explicação passo-a-passo:

a) 3x-10 + 50 + x+20= 180

4x +60 = 180

4x = 180 -60

4x = 120

x= 120/4

x= 30

b) 5x+30 + x +30= 180

6x + 60 = 180

6x = 180 -60

6x = 120

x= 120/6

x = 20

c) 5x -20 = x+20

5x - x = 20 +20

4x = 40

x= 40/4

x= 10

d) 3x +30 +2x +10 = 90

5x + 40 = 90

5x = 90 -40

5x = 50

x= 50/5

x= 10

e) 2x+10 +3x -20= 90

5x - 10 = 90

5x = 90+10

5x = 100

x= 100/5

x= 20

f) x/2 +20 +30= 180

x/2 +50 = 180

x/2 = 180-50

x/2 = 130

x= 130 . 2

x= 260

Answer 2

espero ter ajudado, bjo:)