Question

Solve the simultaneous equations

b) 4x + 3y = 6
5x - 3y = 21
c) 6x – 4y = 39
y = 6 - 2x

Answer 1

X=6. Y= - 6

Explanation:

Put y=6-2x in b)

4x+3(6-2x)=6

4x+18-6x=6

-2x=6-18

- 2x=-12

Divide both sides by - 2

X=6

Put x=6 in y = 6-2x

Y=6-2(6)

Y=-6