Question

1) resolva a equações (deixe registrado o passo a passo )
a)2x-10+7x+10=180
b)4(2x-1)=3(x+2)
c)3(2x-3)+x=5
e)5(2x-1)=3(x+10).
me ajude por favor!​

Answer 1

a)

2 − 1 0 + 7 + 1 0 = 1 8 0  

9 = 180

= 180 / 9

= 20

b)

4 ( 2  −1 ) = (    +2 )

8 − 4 = 3 ( + 2 )

8 − 4 = 3 + 6

8−4+4=3+6+4

8 = 3 + 1 0

8 − 3 = 3 + 1 0 − 3

5 = 1 0

= 1 0 / 5

= 2

c)

3 ( 2 − 3 ) + = 5

6 − 9 + = 5

7 − 9 = 5

7 − 9 + 9 = 5 + 9

7 = 1 4

= 1 4 / 7

= 2

e)

5 ( 2 − 1 ) = 3 ( + 1 0 )

1 0 − 5 = 3 ( + 1 0 )

1 0 − 5 = 3 + 3 0

1 0 − 5 + 5 = 3 + 3 0 + 5

1 0 = 3 + 3 5

1 0 − 3 = 3 + 3 5 − 3

7 = 3 5

= 35 / 7

= 5