1)
x+y=-4
2x-3y=2
y=-4-x
2x-3(-4-x)=2
2x+12+3x=2
5x=2-12
5x=-10
x=-2
y=-4-2
y=-6
2)
2x-y=-4
x-2y=7
x=7+2y
2(7+2y)-y=-4
14+4y-y=-4
14+3y=-4
-3y=18
x=19
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1)
x+y=-4
2x-3y=2
y=-4-x
2x-3(-4-x)=2
y=-4-x
2x+12+3x=2
y=-4-x
5x=2-12
y=-4-x
5x=-10
x=-2
y=-4-2
x=-2
y=-6
2)
2x-y=-4
x-2y=7
x=7+2y
2(7+2y)-y=-4
x=7+2y
14+4y-y=-4
x=7+2y
14+3y=-4
x=7+2y
-3y=18
y=-6
x=19