3.5x+4.5x×7
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3.5x+4.5x×7
3.5x+4.5x×7
3.5x+4.5x×7
8x*7
3.5x+4.5x×7
9x+7x-x=4.5
4.5X-X=3.5
6.5x-4.5x=93.6-6.5x-3.5x
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
解方程:6.9x=23.12 6(x+2)=72 6.8x+2.3×=30.02 (9-4.5)x=4.5 6.8x+2.3×3=30.02 x÷(6.3-2.3)=1.16.8x+6.9x=27.4 1.8(x+0.2)=7.2 3x-4×6=48 6x+7x=26 x+3.5×3=18
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
23-(x+3.5x)=7x等于几
求方程的解,(1)-7x-6=22-6x(2)-4x-3=-5x-2(3)0.4x-4=12+0.6x(4)2-3.5x=4.5x-1(5)3(2x+5)=2(4x+3)-3(6)1-六分之2x-5=四分之3-x
4.5x-x=3.5 解方程
7X(4.5-x)=17.5
4.5x-x=7的解
7x+2x=4.5
3.5x-0.8x
21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272
8x+5x=1.3 4.5x-3.2x=3.9 5.5x-x=9.9 11x-7x-26=34 列方程
x/x-2+x-9/x-7=x+1/x-1+x-8/x-6,