5x-20=31 50x-200=31 5x-20=310 5x-2=31

Question

5x-20=31
50x-200=31
5x-20=310
5x-2=31

Answer 1

1) x=10.2
2)x= 46.2
3)x=66
4)x=6.6

Comments

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само решение надо