0.7x7 3x=4.9
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2.56-X=0.7(X-0.2)2.56-x=0.7x-0.14x+0.7x=2.56+0.141.7x=2.7x=27/172.7(X-2.5)=4.92.7x-6.75=4.92.7x=6.75
很高兴能够在这里回答你的问题,应该为:.3x-4.9=5.2x+20.523x-2x=20.52+4.9x=25.42再问:8.3x-4.9=5.2x+20.521.5(x+3.3)0.5=11.63
1.1x-4.9×0.7=6.361.1x-3.43=6.361.1x=6.36-3.431.1x=2.93x=293/110
0.7777×0.7+0.1111×2.1=0.1111×4.9+0.1111×2.1=0.1111×(4.9+2.1)=0.1111×7=0.7777
3.9啦~~~~
等于91.6
再答:采纳呗再问:要加入我的好友再答:你先给我采纳呗再答:行
4.9÷【0.7×2】=4.9/0.7/2=70/2=35
0.3X=18X=60
3.6x+0.7=12.93.6x=12.2x=61/18=3.38889
3.5X十1.4=4.93.5X=4.9一1.4X=3·5÷3.5X=1再问:3x加2x减1.5x等于53.9再答:3X十2X一1.5X=53.93.5X=53.9X=53.9÷3.5X=
0.7x/3=8.190.7x=8.19×3x=24.57÷0.7x=35.1
同时扩大100倍,就是70÷1=70
0.8888*0.7+0.2222*7.2=0.2222*4*0.7+0.2222*7.2=0.2222*(2.8+7.2)=2.222
x=1.19应该正确再问:过程能写出来吗?再答:0.3x=0.7×0.51x=0.7×0.51÷0.3x=1.19
弦长为L=4.9米,弓形高为H=0.7米,求弧长C?弧半径为R,弧所对的圆心角为A.R^2=(R-H)^2+(L/2)^2R^2=R^2-2*R*H+H^2+L^2/42*R*H=H^2+L^2/4R
原式:4.9×0.7+18.32=49×0.07+18.32=(50-1)×0.07+18.32=3.5-0.07+18.32=21.82-0.07=21.75或(5-0.1)×0.7+18.32=3
7x=4.9x=0.7
4.9/(98/15)=0.754.9/0.75=4.9×4/3=98/15