Question

Solve the equation for y. 4.2x-1.4y=2.1

Answer 1

Subtract 2.1 from both sides:

`4.2x-1.4y-2.1=0`

Add 1.4y to both sides:

`4.2x-2.1=1.4y`

Of course, we can rewrite this as

`1.4y=4.2x-2.1`

Divide both sides by 1.4

`y = (4.2)/(1.4)x - (2.1)/(1.4) = 3x - 1.5`