(1.5+2.5)x+2.5(x-30)=575 怎么解
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(1.5+2.5)x+2.5(x-30)=575怎么解(1.5+2.5)x+2.5(x-30)=575怎么解(1.5+2.5)x+2.5(x-30)=575怎么解等于51.5x+2.5x+2.5x-7
(1.5+2.5)x+2.5(x-30)=575 怎么解
(1.5+2.5)x+2.5(x-30)=575 怎么解
(1.5+2.5)x+2.5(x-30)=575 怎么解
等于5
1.5x+2.5x+2.5x-75
=575
6.5x-75=575
6.5x=575+75
6.5x=650
x=100
12x+3x=18+27 11x+40=100-9 9x+30=90+6x 2.5x-x=6+1.5 2x+18=7x+3 36+2x=7x-14
解方程:x/4=30% 36/x=3/4 10/x=2.5/0.8 x/4=1.2/5 X/1.2=1.5/0.6 x/0.4=1.5/6 x/7=0.6/3.5 x/10=0.1/25-3x=8x+1 2(x-2)+2=x+1 3-x=2-5(x-1) 3x=5(32-x) 7(4-x)=9(x-4) 7x-8=2x+27 5x-18=3-2x (7x-4)+3(x-2)=2x+6 2(3x-4)+(4-x)=4x我是六年级的学生,我希望
2.5(x-3x^2)-[6x^2-1.5(3x^2-5x)]
(1.5+2.5)x+2.5(x-30)=575 怎么解
2(x+1)-(3-x)=2(1.5x-2.5)
1.5x加x=2.5x等于多少?
180/x+180/(x-2.5)=360/(x-1.5)
30/x-30/1.5x=2.5 详细解法
2.5x-x=6+1.5
1.5x-2.5=x+2.
2.5x=x+30怎么解?
2.5X-30=X怎么解?
x加30%x=52、x减40%x=15、50%x加x=31.5、x减1%x=19.8、x加25%x=2.5、x减15%x=8.5
x+x-2.5+x-4=85
30/x=30/(x-1.5)-x
求这三道题的值域f(x)=x^2+4x+5 x∈{2.5} f(x)=x^2-4x+5 x∈{1.5} f(x)=x+√1-x
1、 解方程 7x-2.5x+3x-1.5x=-15×4-6×3
3x-1.5x+4x-2.5x=-2*3-6*2