题目内容
【题目】解方程
0.75x+3×0.8=7.5
x:4=12:8.
【答案】6.8;6
【解析】解:(1)0.75x+3×0.8=7.5
0.75x+2.4=7.5
0.75x+2.4﹣2.4=7.5﹣2.4
0.75x=5.1
0.75x÷0.75=5.1÷0.75
x=6.8
(2)x:4=12:8
8x=4×12
8x÷8=48÷8
x=6
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题目内容
【题目】解方程
0.75x+3×0.8=7.5
x:4=12:8.
【答案】6.8;6
【解析】解:(1)0.75x+3×0.8=7.5
0.75x+2.4=7.5
0.75x+2.4﹣2.4=7.5﹣2.4
0.75x=5.1
0.75x÷0.75=5.1÷0.75
x=6.8
(2)x:4=12:8
8x=4×12
8x÷8=48÷8
x=6