Question

Guys, please if possible help me with #5, #6, #7!

Answer 1

Part 1 :
`x-(12-x)=38`


`x-12+x=38`
`\ Simplify \ brackets`


`2x-12=38`


`2x=38+12`
`\ Add \ 12 \ to\ both \ sides`


`2x=50`


`2x / 2=50 / 2`
`\ Divide \ both \ sides \ by \ 2`


`x=25`

Part 2 :
`(z)/(6) = (7)/(8)+ (5)/(8)`
`\ Add \ 5/8 \ to \ both \ sides`


`(z)/(6) = (3)/(2)`


`z= (3)/(2) *6`
`\ Multiply \ both \ sides \ by \ 6`


`z=18/2`


`z=9`

Part 3:
`3b-(6-b)=-22`


`3b-6+b=-22`
`\ Simplify \ brackets`


`3b+b=-22+6`
`\ Add \ 6 \ to \ both \ sides`


`4b=-16`


`4b/4=-16/4`
`\ Divide \ both \ sides \ by \ 4`


`b=-4`


`7b=-28`

Answer 2

#5. distribute negative sign: x-12+x=38, add 12 to both sides: 2x=50, divide by 2: x=25
#6. add 5/8 to both sides: z/6=12/8, multiply 6 on both sides: z=9
#7. distribute negative sign: 3b-6+b=-22, add 6 to both sides: 4b=-16, divide by 4: b=-4. 7b=-28