1)
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(это проверка)
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2)
125.04-1.2x=5.04
1.2x=120
x=100
2) 1.2x+4.5x-0.7=1.01
5.7x = 1.71
x = 0.3
1)
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2)
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1)
125.04-1.2x=5.04
1.2x=120
x=100
2) 1.2x+4.5x-0.7=1.01
5.7x = 1.71
x = 0.3