In order to determine which equations are equivalent to 8k = 20, simplify the equations:
A.
8k - 4 = 20 + 4
8k = 20 + 4 + 4
8k = 28
this equation is not equal 8k = 20.
B.
8k ÷ 4 = 20 ÷ 4 multiply both sides by 4
8k = 20
This equation is equal to 8k = 20
C.
8k x 3 = 20 x 3 divide both sides by 4
8k = 20
This equation is equal to 8k = 20
D.
8k + 10 = 20 + 10 subtract 10 both sides
8k = 20
This equation is equal to 8k = 20
E.
8k x 5 = 20 ÷ 5
8k = 20 ÷ 5 ÷ 5
8k = 20 ÷ 25
This is not equal to 8k = 20
