x+2.05x=12.2
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x+2.05x=12.2x+2.05x=12.2x+2.05x=12.2x+2.05x=12.2(1+2.05)x=12.23.05x=12.23.05x÷3.05=12.2÷3.05x=4
x+2.05x=12.2
x+2.05x=12.2
x+2.05x=12.2
x+2.05x=12.2
(1+2.05)x=12.2
3.05x=12.2
3.05x÷3.05=12.2÷3.05
x=4