Question

x=2y
x+2y=4

x=-4
x-4y=-3

Answer 1

A) X=2Y

X+2Y=4

2y+2y=4
4y=4
y=4÷4
y=1

x+2×1=4
x+2=4
x=4-2
x=2

B) x= -4
x-4y=-3
-4-4y=-3
-4y=-3+4
-4y=1
y=1+4
y=5

x-4×5=-3
x-20=-3
x=-3+20
x=17