3x+1.05*4-5.3=10?
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3x+1.05*4-5.3=10?
0.3x+1.05*4-5.3=10
0.3x=10+5.3-1.05*4
0.3x=11.1
x=11.1÷0.3
x=37
加油
0.3x=10+5.3-1.05*4
0.3x=11.1
x=11.1÷0.3
x=37
加油
3x+1.05*4-5.3=10?
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