5x+2x=33.6,7x-4x=0.75,2x+7x+2.1=12,56x-32x-119=361,解方程

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5x+2x=33.6,7x-4x=0.75,2x+7x+2.1=12,56x-32x-119=361,解方程

5x+2x=33.6,7x-4x=0.75,2x+7x+2.1=12,56x-32x-119=361,解方程
5x+2x=33.6,7x-4x=0.75,2x+7x+2.1=12,56x-32x-119=361,解方程

5x+2x=33.6,7x-4x=0.75,2x+7x+2.1=12,56x-32x-119=361,解方程
5x+2x=33.6,
7x=33.6;
x=4.8;
7x-4x=0.75,
3x=3/4;
x=1/4;
2x+7x+2.1=12,
9x=8.1;
x=0.9;
56x-32x-119=361
24x=480;
x=20;
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3x=0.75 11x=9.9 24x=480
7x=33.6 x=0.25 x=0.9 x=20
x=70分之336
x=35分之168
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