7.2X=64.8 0.5X+11.4=19.4 X/7.6=41.8
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7.2X=64.80.5X+11.4=19.4X/7.6=41.87.2X=64.80.5X+11.4=19.4X/7.6=41.87.2X=64.80.5X+11.4=19.4X/7.6=41.8x
7.2X=64.8 0.5X+11.4=19.4 X/7.6=41.8
7.2X=64.8 0.5X+11.4=19.4 X/7.6=41.8
7.2X=64.8 0.5X+11.4=19.4 X/7.6=41.8
x=64.8/7.2=9 x=(19.4-11.4)/0.5=16 x=41.8/7.6=5.5 7.2X=64.8 X＝9 0.5X 11.4=19.4 X＝16 X/7.6=41.8 X=317.
9 16
7.2X=64.8 0.5X+11.4=19.4 X/7.6=41.8
解方程：7.2x=64.8 0.5x+11.4=19.4 x/7.6=41.8
8x-5.5x=7.57.2x÷3.6=2 3x＋6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x＋x=1.8 3.2x＋1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x＋6x=4.5 18x-12x=5.42x-1.6x=3.6 18x＋3x=7×6 1.2x-0.5x=0.71.3x＋2.7x=1 4x-3.2x=6.4 0.8x＋3.2x＋3x=562.8x-2x=7.2
（X+X)+(X-X)+(X*X)+(X/X)=100
x-0.7x=64.8求x
x*x*x*x*x=80000?
0.5X+120+0.3X=X
4X+0.5X=13.5X
x-30-0.2x=0.5x
x-0.3x-0.5x=20
9x+0.5x+x=
7x-x=7.2
x-20%x=7.2
7x-x=7.2
1.8x-7.2=x
x-0.48x=7.2
x-0.8x=7.2
X+0.5X=3 X-0.8X=8