Question

resolver y verificar las siguientes ecuaciones
a) x+3.(x-1) -7=6
b) 3x-12:3+2+3.(x-1)=13
c) 4-6+2x+5x-7=12x-19​

Answer 1

Verified answer

a) x+3.(x-1)-7=6

x+3.x+3-7=6

4.x-4=6

4.x=6+4

4.x=10

x=10dividido4

x=2,5

B)3.x-12:3+2+3.(x-1)=13

3.x-4+2+3.x-3=13

6.x-4+2-3=13

6.x-5=13

6.x=13+5

6.x=18

x=18dividido6

x=3

c)

4-6+2.x+5.x-7=13.x-19

-9+7.x=13.x-19

-9+7.x-13=-19

7.x-13.x=19+9

-6.x=19+9

-6.x=-10

x=10dividido 6

x=1,66667