Question

determine by subsiution if: 3 is the root of 8x = 24 4 is the root of 2x - 3 = 5 - 3 is the root of x + 1 ÷ 2 + x - 1 ÷ 2 = 3 - 3 is the root of -2(x + 4) = 14

Answer 1

i have not understood this