Question

a)6x+24=124 b)7x+18=68 c)9x+60=150 d)5x+40=130 e)6x+18=48 f)10x+25=15 g)15x+30=145 h)20x+18=68 me por favor

Answer 1

a) 6x + 24 = 124

6x = 124 - 24

6x = 100

x = 100 (÷2)

-----

6 (÷2)

x = 50

---- ou 16,6

3

b) 7x + 18 = 68

7x = 68 - 18

7x = 50

x = 50

---- ou 7,14

7

c) 9x + 60 = 150

9x = 150 - 60

9x = 90

x = 90

----

9

x = 10

d) 5x + 40 = 130

5x = 130 - 40

5x = 90

x = 90

----

5

x = 18

e) 6x + 18 = 48

6x = 48 - 18

6x = 30

x = 30

----

6

x = 5

f) 10x + 25 = 15

10x = 15 - 25

10x = - 10

x = - 10

---

10

x = - 1

g) 15x + 30 = 145

15x = 145 - 30

15x = 115

x = 115 (÷5)

----

15 (÷5)

x = 23

-----

3

h) 20x + 18 = 68

20x = 68 - 18

20x = 50

x = 50

----

20

x = 2,5