Question

a) 3(x-1) = x+11
b) 3x+7-2(8+x)
c) 5(4+x) = 7x-2
d) 5(3x+2) =819 - 2x)
e) 38+7(x-3) = 9(x-1)​

Answer 1

Respuesta:

Explicación paso a paso:

a) 3(x-1) = x+11

3x−3=x+11

3x−3−x=x+11−x

2x−3=11

2x−3+3=11+3

2x=14

2x 2

= 14 /2

x=7

b) 3x+7-2(8+x)

=3x+7+(−2)(8)+(−2)(x)

=3x+7+−16+−2x

=3x+7+−16+−2x

=(3x+−2x)+(7+−16)

=x+−9

c) 5(4+x) = 7x-2

5x+20=7x−2

5x+20−7x=7x−2−7x

−2x+20=−2

−2x+20−20=−2−20

−2x=−22

−2x −2

= −22 /−2

x=11

d) 5(3x+2) =819 - 2x)

15x+10=−2x+819

15x+10+2x=−2x+819+2x

17x+10=819

17x+10−10=819−10

17x=809

17x 17

= 809 /17

x= 809 /17

e) 38+7(x-3) = 9(x-1)​

7x+17=9x−9

7x+17−9x=9x−9−9x

−2x+17=−9

−2x+17−17=−9−17

−2x=−26

−2x −2

= −26 /−2

x=13

Listo cariño:3!