Answer:
x=2.7142 y=-2.8571,
Step-by-step explanation:
given 4x-8y=12............(1)
14+2x=-6y
2x+6y=-14..........(2)
from equ (2) multiply by 2
4x+12y=-28............(3)
substruct (1) and (3)
4x-8y-4x-6y=12-(-28)
-14y=40 ,y==-2.8571
y=-2.8571 put in equ (1)
4x-8(-2.8571)=12
4x=12-22.857=10.8571
x=
x=2.7142
Answer:
4 =x
Step-by-step explanation:
-3(x+4) = 4(x-10)
Distribute
-3x-12 = 4x - 40
Add 3x to each side
-3x -12 +3x = 4x +3x-40
-12 = 7x-40
Add 40 to each side
-12 +40 = 7x - 40+40
28 = 7x
Divide each side by 7
28/7 = 7x/7
4 =x