Question

How do you solve `3x + 4x + 10- 7= 40`?

Answer 1

`3x+4x+10-7=40`
`(3x+4x)+(10-7)=40`
`7x+3=40`
subtract 3 from both sides :
`=> 7x+3-3=40-3`
`=> 7x=37`
divide both sides by `7`
`=> (cancel7x)/cancel7=37/7`

Hence, `x=37/7`