Question

Решите уравнения:

1) 204 – (– х + 72) = 13

2) (138 – у) + 42 = – 27

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Answer 1

$1) \: 204 - ( - x + 72) = 13 \\ 204 + x - 72 = 13 \\ x = 13 - 204 + 72 \\ x = - 119 \\ 2) \: (138 - y) + 42 = - 27 \\ 138 - y + 42 = - 27 \\ y = 138 + 42 + 27 \\ y = 207$

Answer 2

Ответ:

1) 204 – (– х + 72) = 13

204 + x - 72 = 13

x = 13 + 72 - 204

x = -119

2) (138 – у) + 42 = – 27

138 - y + 42 = - 27

y = 138 + 42 + 27

y = 207