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4(100-15x)=70+25x2/3-8x=3-1/2x4(100-15x)=70+25x2/3-8x=3-1/2x
题目详情
4(100-15x)=70+25x 2/3-8x=3-1/2x
4(100-15x)=70+25x
2/3-8x=3-1/2x
4(100-15x)=70+25x
2/3-8x=3-1/2x
▼优质解答
答案和解析
4(100-15x)=70+25x
400-60x=70+25x
400-35x=70
35x=400-70
35x=7/66
2/3-8x=3-1/2x
2/3-15/2x=3
15/2x=2/3-3
15/2x=﹣7/3
x= - 14/45
400-60x=70+25x
400-35x=70
35x=400-70
35x=7/66
2/3-8x=3-1/2x
2/3-15/2x=3
15/2x=2/3-3
15/2x=﹣7/3
x= - 14/45
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