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(2/11+1/2)%x%2/11=1/4解方程

(2/11+1/2)-x-2/11=1/4 1/2-x=1/4 x=1/2-1/4=2/4-1/4=1/4

2/11+1/12(-x-2/11)=4 解:2/11-1/12x-1/66=4 -1/12x=4+1/66-2/11 -1/12x=253/66 x=-1518/11

令t=2^x>0 则方程为t²+|1-t|=11 当t>=1时,化为:t²+t-1=11,即t²+t-12=0,得(t+4)(t-3)=0,得t=3,即x=log2(3) 当0

原式 =2/11x11x13+1/13x11x13 =(2/11x11)x13+(1/13x13)x11 =2x13+1x11 =26+11 =37 供参考。

(1)原式=?x1?x×x?1x=1;(2)原式=21? x2+21+ x2+41+ x4=41? x4+41+ x4=81? x8.

1.2x=11-2.6 1.2x=8.4 x=7 望采纳哟

解:依题意得方程, 2×(x-3)=11.6 x-3=11.6÷2 x-3=5.8 x=5.8+3 x=8.8 即2×(x-3)=11.6的解是x=8.8

解:1.8x-1.2×4=11.4 1.8x-4.8=11.4 1.8x=11.4+4.8 1.8x=16.2 x=16.2÷1.8 x=9

#include int main() {int y[12],x; for(x=0;x

2.1(x-0.7)=4.2 x-0.7=2 x=2.7

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