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2X =15-13
X =2:2
X =1
B- 7X+8=64
7X =64-8
X =56:7
X =8
2x = 15-13 7x = 64-8 -3x=-20-5*(-4)
2x = 2 7x = 56 -3x=-25*(-4)
X=2/2 x=56/7 -3x=100
x=2 x=8 x=100/3
D) x+3x+5=3*5 E) 3*4-5*6=2x+7x
x+3x=15-5 12-30=9x
4x=10 -18=9x
x=10/4 -18/9=x
x=-2
F)x+3-7x=-40+7
x-7x=-40+7-3
-6x=-36
x=-36/6
x=6