Question

What is the value of x in the equation 4x + 8y =40, when y=0.8

Answer 1

x= 8.4

Explanation:

y=0.8

4x + 8y =40

4x + ( 8 x 0.8) = 40

4x + (6.4) =40

4x = 40 - 6.4

4x = 33.6

x = 8.4