Question

What is the solution to this equation?
7x + 3 = 10x - 5.4

Answer 1

`x=2.8`

Explanation:

`7x+3=10x-5.4`

Subtract 3 from both sides:

`7x+3-3=10x-5.4-3`

`7x=10x-8.4`

Subtract 10x from both sides:

`7x-10x=10x-8.4-10x`

`-3x=-8.4`

Divide both sides by -3:

`(-3x)/(-3)=(-8.4)/(-3)`

`x=2.8`