计算题!能简算的要简算哦~(1) 1/1x2+1/2x3+1/3x4+1/4x5+1/5x6(2)2/2x4+2/4x6
1个回答
(1/1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)=1-1/6=5/6
(2)
化简跟(1) 一样
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化简:①-1/2x-(x-3)②-1/2(4x-6)+1/3(6-3x)③-(x²-2x-2)+2(x
解比例计算题1.1/4:1/3=x:5/6 2.4:5=6:x 3.6:2=x:13 4.3/4=x/10
化简:[1(x+1)(x+2)+1(x+2)(x+3)+1(x+3)(x+4)+1(x+4)(x+5).
化简:[1(x+1)(x+2)+1(x+2)(x+3)+1(x+3)(x+4)+1(x+4)(x+5).