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5x-8x=-15 5x-10x=-6+5 9y-12y=11-10 8x+3x-7x-x=4+14
-3x=-15 -5x=-1 -3y=1 3x=18
x=-15/-3 x=-1/-5 x=1/-3 x=18/3
x=5 x=1/5 x=-1/3 x=6
8x+9-12x=4x-13-5x 16+7x-5+x=11x-3-x y-5=5y-25
8x-12x-4x+5x=-9-13 7x+x-11x+x=-16+5-3 y-5y=5-25
-3x=-22 -2=-14 -4y=20
x=-22/-3 x=-14/-2 x=20/-4
x=22/3 x=7 x=-5
21-6x=27-8x
-6x+8x=-21+27
2x=6
x=6/2
x=3
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