解方程.6x+4x=1.8×4 &nb
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解方程.
6x+4x=1.8×4 8.6-(x+2)=1.8
(x-3.8)×0.7=3.36 1.8×2.5+0.5x=8.5.
6x+4x=1.8×4 8.6-(x+2)=1.8
(x-3.8)×0.7=3.36 1.8×2.5+0.5x=8.5.
![解方程.6x+4x=1.8×4 &nb](/uploads/image/z/16099621-61-1.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B%EF%BC%8E6x%2B4x%3D1.8%C3%974%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nbsp%3B%26nb)
(1)6x+4x=1.8×4,
10x=7.2,
10x÷10=7.2÷10,
x=0.72;
(2)8.6-(x+2)=1.8,
8.6-(x+2)+(x+2)=1.8+(x+2),
8.6=x+3.8,
x+3.8-3.8=8.6-3.8,
x=4.8;
(3)(x-3.8)×0.7=3.36,
0.7x-3.8×0.7=3.36,
0.7x-2.66=3.36,
0.7x-2.66+2.66=3.36+2.66,
0.7x=6.02,
0.7x÷0.7=6.02÷0.7,
x=8.6;
(4)1.8×2.5+0.5x=8.5,
4.5+0.5x=8.5,
4.5+0.5x-4.5=8.5-4.5,
0.5x=4,
0.5x÷0.5=4÷0.5,
x=8.
10x=7.2,
10x÷10=7.2÷10,
x=0.72;
(2)8.6-(x+2)=1.8,
8.6-(x+2)+(x+2)=1.8+(x+2),
8.6=x+3.8,
x+3.8-3.8=8.6-3.8,
x=4.8;
(3)(x-3.8)×0.7=3.36,
0.7x-3.8×0.7=3.36,
0.7x-2.66=3.36,
0.7x-2.66+2.66=3.36+2.66,
0.7x=6.02,
0.7x÷0.7=6.02÷0.7,
x=8.6;
(4)1.8×2.5+0.5x=8.5,
4.5+0.5x=8.5,
4.5+0.5x-4.5=8.5-4.5,
0.5x=4,
0.5x÷0.5=4÷0.5,
x=8.