解方程:0.7x+4=0.2x-3.75

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解方程:0.7x+4=0.2x-3.75解方程:0.7x+4=0.2x-3.75解方程:0.7x+4=0.2x-3.750.7x+4=0.2x-3.750.7x-0.2x=-4-3.750.5x=-7

解方程:0.7x+4=0.2x-3.75
解方程:0.7x+4=0.2x-3.75

解方程:0.7x+4=0.2x-3.75
0.7x+4=0.2x-3.75
0.7x-0.2x=-4-3.75
0.5x=-7.75
x=-15.5

0.7x+4=0.2x-3.75
0.5x=-7.75
x=-15.5

0.7x+4=0.2x-3.75
0.7x-0.2x=-3.75-4
0.5x=-7.75
x=-15.5