`b,`
`2.x-3=11`
`=>2x=11+3`
`=>2x=14`
`=>x=14:2`
`=>x=7`
`c,`
` (2+x) :5=6`
`=>2+x=6 .5`
`=>2+x=30`
`=>x=30-2`
`=>x=28`
`d,`
`2+x:5=6`
`=>x:5=6-2`
`=>x:5=4`
`=>x=4.5`
`=>x=20`
`e,`
`32.(x-10)=32`
`=>x-10=32:32`
`=>x-10=1`
`=>x=1+10`
`=>x=11`
`f,`
` (x-15)-75=0`
`=>x-15=0+75`
`=>x-15=75`
`=>x=75+15`
`=>x= 90`
b,2.x−3=11
2x=11+3
2x=14
x=14:2
x=7.
c,(2+x):5=6
2+x=6.5
2+x=30
x=30−2
x=28.
d,2+x:5=6
x:5=6−2
x:5=4
x=4.5
x=20.
e,32.(x−10)=32
x−10=32:32
x−10=1
x=1+10
x=11.
f,(x−15)−75=0(x-15)-75=0
x−15=0+75
x−15=75
x=75+15
x=90.