Cant do your own homework?
this would be -
8=6x-2x
8=4x
8/4=x
2=x
6(2)-y=8
12-y=8
-y= (8-12)
-y=-4 ---- multiply each by -1 to make positive
y=4
test your work:
6(2)-4=8 ---- is this true?
12-4=8
8=8 - so your answer must be correct
Seriously - do your own homework!
x = -8
2x - 8 = 10 2x = 10 + 8 2x = 18 x = 18 / 2 x = 9
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
2x + 1 = 9 2x = 9 - 1 2x = 8 2x/2 = 8/2 x=4
You cannot solve one equation in two unknowns.
x = -8
8
2x - 8 = 10 2x = 10 + 8 2x = 18 x = 18 / 2 x = 9
2x+8 = 6 2x = 6-8 2x = -2 x = -1
y=4x-8y=2x+10Substitute (4x-8) for y in the second equation and solve for x:4x-8=2x+102x=18x=9Now solve for y:y=4(9)-8=28(9,28)
2x + 1 = 9 2x = 9 - 1 2x = 8 2x/2 = 8/2 x=4
You cannot solve one equation in two unknowns.
2x+8=10... Subtract 8 on both sides, then devide by 2... 2x=2... x=1
2x+1 = 9 2x = 9-1 2x = 8 x = 4
I would use substitution. Turn the second equation into y=8-2x, put it into the first and solve for x. Then put x into one of the equations and solve for y.So...2x-3(8-2x)=24 --> 2x-24+6x=24 --> 8x=48 --> x=6y=8-(2x6) --> y=8-12 --> y=-4
2x - 5 = 11 2x = 11 + 5 2x = 16 2x /2 = 16 /2 x = 8
6x-8+2x-5 = 7-2x 6x+2x+2x = 7+8+5 10x = 20 x = 20/10 x = 2