Mathematics for IGCSE & O level - Equations (Section 6 - No. 3)

If the equation is 2x - 3y = 7, and x = 4, what is the value of y?

-1/3

1/3

-1

Substitute x = 4 into the equation: 2(4) - 3y = 7 => 8 - 3y = 7 => -3y = -1 => y = 1/3.