Question

2x=10

3x= 36

2x+3=11

10x-13=42

X- 5=13

X-10=5

x+20= - 5

6x +60=2x

X+7x=72

Answer 1

Resposta:a) x + 3 = 11

x = 11 - 3

x = 8

b) x - 5 = 13

x = 13 + 5

x = 18

c) 2x = 10

x = 10/2

x = 5

d) x - 10 = - 5

x = - 5 + 10

x = 5

e) 3x = 36

x = 36/3

x = 12

f) x + 20 = - 5

x = - 5 - 20

x = - 25

g) 2x + 3 = 11

2x = 11 - 3

2x = 8

x = 8/2

x = 4

h) 6x + 60 = 2x

6x - 2x = - 60

4x = - 60

x = - 60/4

x = - 15

i) 10x - 13 = 42

10x = 42 + 13

10x = 55

x = 55/10 (÷ 5)

x = 11/2

j) x + 7x = 72

8x = 72

x = 72/8

x = 9

k) 3x - 5 = x - 2

3x - x = - 2 + 5

2x = 3

x = 3/2

l) 100 + 7x = 2x

7x - 2x = - 100

5x = - 100

x = - 100/5

x = - 20

m) 5x - 4 = 2x + 9

5x - 2x = 9 + 4

3x = 13

x = 13/3

Explicação passo a passo:bons estudo