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10x%8y=14

14x-6=10x+8 解:14x-10x=8+6 4x=14 x=14÷4 x=3.5

解:移项得: 10x-11x=-16-8 合并同类项得: -x=-24 系数化为1得: x=24

“10x=14.8",是一个等式,只含有一个未知数的一个等式,概念上不属于“方程” 这等式的“解”,就是简化: 10x=14.8 = x=14.8/10 = x=1.48

2X+4(8-X)=20 2x+32-4x=20 -2x+12=0 x=6 10X-6(10-X)=36 10x-60+6x=36 16x=96 x=6 10X-6(16-X)=64 10x-96+6x=64 16x=160 x=10 0.5X+0.1(8-X)=2 0.5x+0.8-0.1x=2 0.4x=1.2 x=3 4X-2(8-X)=14 4x-16+2x=14 2x=30 x=15

=(x+2)(x+4)(x+6)(x+8)+12 =[(x+2)(x+8)][(x+4)(x+6)]+12 =(x²+10x+16)(x²+10x+24)+12 =(x²+10x+16)²+8(x²+10x+16)+12 =(x²+10x+16+2)(x²+10x+16+8) =(x²+10x+18)(x²+10x+24) =(x²+10x+18)(x...

(-3/7)X(-1/2)X(-8/15) =-4/35 (-8)X1.25 =-10 7/10X(-3/14)=-3/20 (-3/16)X(-8/9) =1/6 7.5X(-8.2)X0X(-19.1) =0 -3/14X5/7=-15/98

y=10x,x∈[-8,5] y=10ᕽ,x∈[-8,5]

X=1÷1.25=0.8, Y=1÷8/7=7/8, 10X-8Y =10×0.8-8×7/8 =8-7 =1.

3x-6-8+2x=10x+5 解:5x-14=10x+5 5x=-19 x=-5分之19

64=10x-6(8-x)=10x-6×8+6x=16x-48 16x=64+48=100 x=100/16=25/4

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