Question

d) 10 + 8x = 50
e) x + 8 + 3x = 24
f) y – 12 = 8
g) 3k – 2 = 25
h) 3x + 8 – x = 10
i) 3a – 12 + a = 12
J) 3y + 5 = 12 – y

Answer 1

Resposta:

d) 10 + 8x = 50

8x = 50 - 10

8x = 40

x = 40 / 8

x = 5

e) x + 8 + 3x = 24

x + 3x = 24 - 8

4x = 16

x = 16 / 4

x = 4

f) y – 12 = 8

y = 8 + 12

y = 20

g) 3k – 2 = 25

3k = 25 + 2

3k = 27

k = 27 / 3

k = 9

h) 3x + 8 – x = 10

3x - x = 10 - 8

2x = 2

x = 2 / 2

x = 1

i) 3a – 12 + a = 12

3a + a = 12 + 12

4a = 24

a = 24 / 4

a = 6

J) 3y + 5 = 12 – y

3y + y = 12 - 5

4y = 7

y = 7 / 4