2.9x +0.08x=45.6 уровнения

Question

2.9x +0.08x=45.6 уровнения

Answer 1

2.9x+0.08x=45.6
2.98x = 45.6
x=45.6 : 2.98
x=15.3
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2,9*15,3+0,08*15,3=45,6