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2.5x÷20=16解方程 解方程x-0.75x=4
解方程x-0.75x=4 解方程x-0.75x=4x-0.75x=4 1-0.75 x=40.25x=41/4x=4x=16解方程:x-0.75x=42苍月Swart ,你好:x-0.75x=42解:
解方程x-0.75x=4
解方程x-0.75x=4
x-0.75x=4
(1-0.75)x=4
0.25x=4
1/4x=4
x=16
解方程:x-0.75x=42
苍月Swart ,你好:
x-0.75x=42
解:0.25X=42
X=42÷0.25
X=168
解方程:x-0.75x=6.25
0.25x=6.25,x=25

x-0.75x=1怎么解方程
0.25x=1
x=1/0.25
x=4
解方程:x^0.75-x^0.25=0.75 求x
x^3/4-x^1/4=3/4
(x^3/4-x^1/4)^2=9/16
x^3/2+x^1/2-2x=9/16
(x^3/2+x^1/2)^2=(9/16+2x)^2
x^3+x+2x^2=81/256+4x^2+2*9/16*2x
x^3-2x^2-5/4x-81/256=0
256x^3-512x^2-320x-81=0
解方程.x÷0.75=1.54
①x÷0.75=1.54,x÷0.75×0.75=1.54×0.75,
x=1.155;②1.8x=2.16,
1.8x÷1.8=2.16÷1.8,
x=1.2;
③x+6.53=21.1,
x+6.53-6.53=21.1-6.53.
x=14.57;
X:0.75=81.25 解方程
x=81.25*0.75
x=60.9375
解方程. 0.75x+13
(1)0.75x+
1 3×
3 4=1,
0.75x+
-
1 4=1-
1 4,
0.75x÷0.75=
÷0.75,
x=1;
(2)20-120% x=5,
20-120% x+120%=5+120%x,
20-5=5+120%x-5,
120%x÷120%=15÷120%,
x=12.5;
(3)x+
1 3x=36,
4 3x=36,
4 3x×
3 4=36×
3 4,
x=27;
(4)(1-
3 7)x=60,
4 7x=60,
4 7x×
7 4=60×
7 4,
x=105.
解方程.0.75x+3×
(1)0.75x+3×0.8=7.5,0.75x+2.4=7.5,
0.75x=7.5-2.4,
0.75x=5.1,
x=5.1÷0.75,
x=6.8;
(2) 2x 0.6 = 0.9 3
,
2x×3=0.6×0.9,
6x=0.54,
x=0.54÷6,
x=0.09.
x-0.75=2.5解方程
x-0.75=2.5
解:X-0.75+0.75=2.5+0.75
X=3.25
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