解方程 (1)7x -3x =8.8 (2)10x+45 ×8 =870 (3)
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解方程
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![解方程 (1)7x -3x =8.8 (2)10x+45 ×8 =870 (3)](/uploads/image/z/11010371-59-1.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B+%EF%BC%881%EF%BC%897x%26nbsp%3B-3x%26nbsp%3B%3D8.8+%EF%BC%882%EF%BC%8910x%2B45%26nbsp%3B%C3%978%26nbsp%3B%3D870+%EF%BC%883%EF%BC%89)
(1)7x -3x =8.8
x=2.2 (2)10x+45 ×8 =870
x=51
(3)5×(x-12)=15
x=15
x=2.2 (2)10x+45 ×8 =870
x=51
(3)5×(x-12)=15
x=15
解方程(1)3-4x=2-x; &nb
解方程 (1)7x -3x =8.8 (2)10x+45 ×8 =870 (3)
解方程.(1)7x÷3=8.19 &n
(1)解方程:x2-3x-10=0 &
解方程7x-3.4x=0.72; 3(x+2.1)=10.5;
解方程(1)x2-6x-7=0 &nb
解下列方程:(1)7x-6=-5x (2)-35
解方程(1)x2-4x=0  
①8(2x+2.6)=32  
解方程:(1)-7x+2=2x-4; (2)-(x-3)=3(2-5x); 
解方程.(1)3×7+4x=25; (2)6x+18=48;
解下列方程:(1)3x(2x+1)=4x+2 &n