Question

Me falem essa
A)7x+12=2x+2
B)150x+800=50x-200
C)3x+80=-6x-1
D)2x+300=7x+200
E)3x+20=9x-16

Me responde essa?

Answer 1

A)7x+12=2x+2

7x - 2x = 2 - 12

5x = - 10

x = - 10/ 5

x = -2

B)150x+800=50x-200

150x - 50x = - 200 - 800

100x = - 1000

x = -1000/100

x = - 10

C)3x+80=-6x-1

3x + 6x = - 1 - 80

9x = - 81

x = - 81/9

x = - 9

D)2x+300=7x+200

300 - 200 = 7x - 2x

100 = 5x

5x = 100

x = 100/5

x = 20

E)3x+20=9x-16

20 + 16 = 9x - 3x

36 = 6x

6x = 36

x = 36/6

x = 6