7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十3x=88 (50一2x)÷2=12
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7(x一3.6)=5.6(x+2.8)÷2.5=103(x一2.7)=124x7十7(x一3.6)=5.6(x+2.8)÷2.5=103(x一2.7)=124x7十3x=88(50一2x)÷2=127
7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十3x=88 (50一2x)÷2=12
7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十
7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十3x=88 (50一2x)÷2=12
7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十3x=88 (50一2x)÷2=12
7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十7(x一3.6)=5.6 (x+2.8)÷2.5=10 3(x一2.7)=12 4x7十3x=88 (50一2x)÷2=12
6x?一2x?=24 2.8x?+1.26x?一2x?=24 2.8x?+1.2x?=3.6 是多少
4x一3(20一x)=6x一7(9一x)
9X一X一X=
7x一3x=64,
4(2X一9)+3(X一15)=7(X一1)一2
4(2x一7)一2(x一1)=3(x一1)一2 x=?
3.6x一4=5x一25
x的平方一x一m=(x+n)(x+7),则m+n=
3^一x+3^一7x=-4
解方程7X一2/1[x一2/1(X一1)]=3/2(x一1)
2X一3一(一5X一10)=5 (一7x+3)一(5x一3)=10 (5X一3)一(一7X十3)=2X一3一(一5X一10)=5(一7x+3)一(5x一3)=10(5X一3)一(一7X十3)=3分别怎么解?
5x一x十14=20 4(x一3)=7(x一6)解方程
3x十7x十5x一7x=17十18
当x+y=2时7(x+y)一(x+y)+(x+y)=?
(2x一1)=x(3x+2)一7解方程
7(x+4)=2(2一x)+3(4x一2)
7(x+4)=2(2一X)十3(4X一2)