Question

When using substitution, what does the equation look like after the 1st step ?

y = 6x +3

x + 2y = 5

Answer 1

Explanation:

y = 6x + 3 --------------(I)

x + 2y = 5 -------------(II)

substitute y = 6x + 3 in equation (II)

x + 2*(6x + 3) = 5

x + 2*6x + 2*3 = 5

x + 12x + 6 = 5

13x + 6 = 5