Question

решите уравнения
1) -43×(5х+17)=129
2)81×(97-10х)=-243
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Answer 1

1) - 43 × (5х + 17) = 129

5х + 17 = - 3

5х = - 3 - 17

5х = - 20

х = - 4

2)81 × (97 - 10х) = - 243

97 - 10х = - 3

- 10х = - 3 - 97

- 10х = - 100

х = 10