Question

Solve the simultaneous equations 2x + 3 = 13 4x +- y = -2

Answer 1

x=5 and y=22

Explanation:

2x+3=13

2x+3+−3=13+−3(Add -3 to both sides)

2x=10

`(2x)/(2)` =
`(10)/(2)` (Divide both sides by 2)

x = 5

Substitute5forxin4x−y=−2:

4x−y=−2

(4)(5)−y=−2

−y+20=−2(Simplify both sides of the equation)

−y+20+−20=−2+−20(Add -20 to both sides)

−y=−22

`(-y)/(-1)` =
`(-22)/(-1)` (Divide both sides by -1)

y=22

Hope this helped!!