Answer:
the sustitucion metod is easy x=5 y=3
Step-by-step explanation:
x-3y=-4 (-2)
2x-y=7 (1)
-2x+6y=8
2x-y=7
5y=15
y=3
2x-3=7
2x=10
x=5
Step-by-step explanation:
x=3y-4 eqn i
2x-y =7 eqn ii
[tex]2x - 7 = y [/tex]
sub y=2x-7 in eqn i
x=3(2x-7)-4
x=6x-21 -4collecting like terms
x-6x= -21-4
-5x= -25
divide both sides by 5
x=5
since x=5 sub in any eqn
y=2x-7
=2(5) -7
y=10 -7=3
