Question

Y-21=-3(x-3) please solve this equation

Answer 1

For x:
`x = (-1)/(3)y +10`

For y:
`y = -3x +30`

Explanation:

If you want to solve the equation for x, then perform these steps:

`Y-21 = -3 (x-3)`

`(y-21)/(-3) = x - 3` Divide between (-3) on both sides of the equation

`(-1)/(3)(y-21) +3 = x` Sum 3 on both sides of the equation
`x = (-1)/(3)(Y-21) +3\\\\x = (-1)/(3)y+(21)/(3) + 3\\\\x = (-1)/(3)y +10`

If you want to solve the equation for y, then perform these steps:

`y-21 = -3(x-3)`

`y = -3(x-3) +21` Sum 21 on both sides of the equation

`y = -3x+9+21\\y = -3x +30`