(x-2.6)/5=(x+5-2.6)/7.5怎么算?
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(x-2.6)/5=(x+5-2.6)/7.5怎么算?(x-2.6)/5=(x+5-2.6)/7.5怎么算?(x-2.6)/5=(x+5-2.6)/7.5怎么算?左右同乘5*7.57.5(x-2.6)
(x-2.6)/5=(x+5-2.6)/7.5怎么算?
(x-2.6)/5=(x+5-2.6)/7.5怎么算?
(x-2.6)/5=(x+5-2.6)/7.5怎么算?
左右同乘 5*7.5
7.5(x-2.6)= 5*(x+5-2.6)
7.5x -7.5*2.6 = 5x + 5*5 - 5*2.6
7.5x - 5x = 5*5-5*2.6+7.5*2.6
2.5x = 25 + 2.6*2.5
x = 10+2.6
x = 12.6
21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
解方程3x=x+4,2.6x-8=2.4x,4x+12=10x+3 ,7x=12-×,2.5x=2x+4,5x+3=6x+1,详列计算,
x-5%x=60 30%x+12=75 20%x+2.6=8
2.6x-0.1x+2*3.51=32.02 0.3x-5=0.8x-25
f(x)=5x^5+2x^4+3.5x^3-2.6x^2+1.7x-0.8,用秦九韶法计算多项式当x=5时
9.8x-10=8x+8 150x=120(9-x) 30+5x=7x-24 4.5x x2+5x=28 5x-2.6=3x+(1.8-0.4)用方程解
12.4x-7.8x=23 5(x-1.9)=10.5 3x-2.6x=0.25乘于2
x-三分之一x-四分之一x(x-三分之一x)=5
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
2.6x-x-0.1x=0.75
(x-2.6)/5=(x+5-2.6)/7.5怎么算?
(x+2.6)×5=20
4.2x+x=104解方程 8x-3x+4×2=18 3.4x-20÷5+2.6x=20
解方程x/(x-2)=2x/(x-3)+(1-x)/(x-5x+6)
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
x-2x+3x-4x+5x.+99x-100x=25求解
x.x-5x+1=0,那么x.x+1/x.x