Question

A) 5x-2y=3
4x+y=5

B) x+y=0
-3x+y=4

C) 2x+y=5
x-2y=5


Me ajudem pfvv

Answer 1

A)y=5-4x
5x-2(5-4x)=3
5x-10+8x=3
5x+8x=3+10
13x=13
x=13/13
x=1
y=5-4×1
y=5-4
y=1

B)x=0-y
-3(0-y)+y=4
0+3y+y=4
3y+y=4+0
4y=4
y=4/4
y=1
x=0-1
x=-1

C)y=5-2x
x-2(5-2x)=5
x-10+4x=5
x+4x=5+10
5x=15
x=15/5
x=3
y=5-2×3
y=5-6
y=-1
espero ajudar ♥