Question

a)3×-36=-2
b)×+×+150+×+250=100
c)×+×+20+2×+40+3×=725
d)2×-10+×=11
e)5×-65=3×+81
f)×+×-2=74
g)×+×+×+4=52
h)8×-50=7×+20​

Answer 1

Resposta:

Olá! Segue as resoluções:

a)3x -36 = -2

3x = -2 +36

3x = 34

x = 34/3

b)x+x+150+x+250=100

3x + 400 = 100

3x = 100 - 400

3x = - 300

c) x+x+20+2x+40+3x=725

7x = 725 - 60

7x = 665

x = 665/7

x = 95

d)2x-10+x=11

3x = 21

x = 21/3

x = 7

e)5x-65=3x+81

5x - 3x = 81 + 65

2x = 146

x = 146/2

x = 73

f)x+x-2=74

2x = 74+2

2x = 76

x = 76/2

x = 38

g)x+x+x+4=52

3x = 52 - 4

3x = 48

x = 48/3

x = 16

h)8x-50=7x+20

8x -7x = 20 + 50

x = 70

Espero ter ajudado :) Bons estudos!