解方程:2.8x+7x=44.1
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解方程:2.8x+7x=44.1
解方程:2.8x+7x=44.1
解方程:2.8x+7x=44.1
9.8X=44.1
X=44.1÷9.8
X=4.5
9.8x=44.1
x=4.5
2.8x+7x=44.1
7.8x=44.1
x=44.1/7.8
x=5.65
x=44.1/9.8=4.5
9.8X=44.1
X=44.1/9.8
X=4.5
9.8x=44.1,x=44.1/9.8=441/98