Question

1)Determine.me ajudem é urgente sério .com CONTAS

Answer 1

a) 3x 40 + 2x = 90

3x + 2x = 90 - 40

5x = 50

x = 50/5

x = 10

b) 5x - 10 + x + 10 = 90

5x - x = 90 + 10 - 10

6x = 90

x = 90/6

x = 15

c) 2x + 2x - 10 = 90

4x = 90 + 10

4x = 100

x = 100/4

x = 25

d) x + 20 + x - 10 = 90

x + x = 90 - 20 + 10

2x = 70 + 10

2x = 80

x = 80/2

x = 40

e) 3x + 20 + 2x - 30 = 180

3x + 2x = 180 - 20 + 30

5x = 160 + 30

5x = 190

x = 190/5

x = 38

f) 3x + 100 + 5x = 180

3x + 5x = 180 - 100

8x = 80

x = 80/8

x = 10

g) 3x - 28 + 2x - 70 = 180

3x + 2x = 180 + 28 + 70

5x = 278

x = 278/5

h) 3x - 20 + 3x + 20 = 180

3x + 3x = 180 + 20 - 20

6x = 180

x = 180/6

x = 30

i) 5x + 76 + x - 84 = 180

5x + x = 180 - 76 + 84

6x = 188

x = 188/6