作业帮3.75:0.75=x:32
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0.64x=32x=32/0.64
2x+3x+5x=3210x=32x=3.2
(1)0.25x=-5x=-20(2)3x-4x=1-5x=4(3)3x-4x=18-5x=-13(4)1+7=x+7xx=1(5)9x-7x-3x=-8x=8(6)-x+3x=3-2x=1/2(7)
24x+180-32x=102180-102=32x-24x8x=78x=39/4
32x-7x-5x=420(32-7-5)x=42020x=420x=21
4x+32=25x+0.525x-4x=32-0.521x=31.5x=1.5
异项变号2x=28x=14
（X+X)+(X-X)+(X*X)+(X/X)=1002X+0+X*X+1=1002X+X*X=99X(X+2)=99X=9再问：请问X(X+2)=99解为什么就等于9了呢没看懂再答：换成算术法你就明
x=32或者x=0.5我的思路是两边同时对底取才就是log2^(x^(log2^x))=log2^(32x^4)左边这时候就等于(log2^x)^2右边等于log2^32+log2^(x^4)=5+4
方程是啥?如果为：x^0.75-x^0.25=0.75令t=x^0.25,则x^0.75=t^3方程化为:t^3-t=0.75,解得：t=1.26255112740716x=t^4=2.5409486
/>合并同类项0.5x=32两边同时除以0.5x=64所以原方程的解是x=64祝你成绩好
32x-7x-5x=42020x=420x=21
5x+2x=33.6,7x=33.6;x=4.8;7x-4x=0.75,3x=3/4;x=1/4;2x+7x+2.1=12,9x=8.1;x=0.9;56x-32x-119=36124x=480;x=
0.25x=5.6（合并同类项）x=5.6/0.25（移项）x=22.4望采纳!
14x-6x²+10x²+5x=4x²-3x+3222x=32∴x=16/11
苍月Swart,你好：x-0.75x=420.25X＝42X＝42÷0.25X=168
X平方+28X-160=32X^2+28X-192=0(X+14)^2=192+196X+14=±√388X=-14+2√97或X=-14-2√97.
10x-3.14*x*x*0.25=3.14*x*x*0.7510x=3.14*x*x*0.75+3.14*x*x*0.253.14*x*x*(0.75+0.25)-10x=03.14*x*x-10x
X-0.75X=三分之一X-10则0.25x=(x-10)/3则0.25x*3=x-10则10=x-0.75x则0.25x=10所以x=40