3/11x2/1=611 50/19x19/10= 5 24/13x26/8=6 40/11x22/10=8 100/16x16/25=4 3/1x5/3+2=5+2=7 2/1+3/1x5/2=2+7.5=9.5 14/9x3/1+3/2=143+32=376 7/5-9/5x7/5=-2825 1-7/5x25/21=1-53=-23 6/1x(5-3/2)=6x-72=-21 8/7x7+8/3=8=83=323 (6+5/2)x8/3=172x83=683
4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7=
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相关问题
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(1+2+3+4+5+6+7+8+9+10+11+12+13+14+15)x5=?
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2.1X+7.9X=6.9 5X+0.8×2=7.12X+5.8=8.2 6X-3×4=1.2
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①27x-4x=34.5②3x2.8=4.3③12x-24=6④5.8+2x=20五6.9x-4.1=9.7⑥3.6x+
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因式分解:X15+X14+X13+X12+X11+X10+X9+X8+X7+X6+X5+X4+X3+X2+X+1
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1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
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求方程: X+X^2+X^3+X^4+X^5+X^6+X^7+X^8+X^9+X^10+X^11+X^12=12*0.9
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列方程算9-2x=6.5 4.5(x-6)=18 2.7(x+4)=10.8 12(9.5-x)=24 7(15-x)=
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1.48x(3/4-1/6)2.3/4x4/9+5/9x3/43.1/5x1/8+7/8x1/54.12x(1/2+1/