Question

Four less than the difference between a number and seven is seven

Use the Algebraic equation and solve for the x
(Use x for the variable )
* I really need help I don’t understand it

Answer 1

x=8

Explanation:

Four less than the difference between a number and seven is seven

let's go by parts

Four less

that means if we have a number
`y` we subtract 4

so we can write

`y-4`

the difference between a number and seven remember this is
`y`

let's say x is "a number"

so we can rewrite it as

the difference between x and seven

and that means

`x-7`

so we have

`y=x-7`

put all together and we have

`y-4\\\\=(x-7)-4\\\\=-4+x-7`

and the final part

is seven

this means that the equation upward is equal to seven

=7

so we have our equation

`-4+x-7=7`

`x+(-4-7)=7\\\\x-11=7\\\\x-11+11=7+11\\\\x+0=18\\\\x=18`

so there it is our number is 8