Question

8x-9y=24.5
7y-2x=-8.5
solve by elimination

Answer 1

8x-9y=24.5 =8x-9y=24.5
4(-2x+7y=-8.5)=-8x+28y=-34
= 0x+19y=-9.5
y=-.5
7(-.5)-2x=-8.5
-7/2 - 2x=-8.5
-2x=-5
x=5/2
y=-.5

Answer 2

how do I make it an ordered pair, a fraction ordered pair?

Answer 3

-9y+8x=24.5 rearanged -9y+8x=24.5
7y-2x=-8.5 mult by 4 28y-8x=-34 add
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19y =-9.5
y=-1/2 sub this to the other eq

Answer 4

(x,y)=(5/2,-1/2)

Answer 5

oh lol thanks you

Answer 6

y.w. lol good luck now

Answer 7

see i can do the first half of the problem fine, but I have a problem understanding how they come up with the fractions in the second half

Answer 8

the 2nd half is substitution
7(-1/2)-2x=-8.5
-7/2 - 2x=-8.5
-2x=-5
x=5/2

Answer 9

well no wonder lol. thank you so much for yor help I really appreciate it :D

Answer 10

ok good luck now