Решите уровнение 11 (15-7x) = -78 + 4 x

Question

Решите уровнение 11 (15-7x) = -78 + 4 x

Answer 1

11 (15-7x) = -78 + 4 x
165 - 77x = - 78 + 4x
165 + 78 = 4x + 77x
81x = 243
x = 243 : 81
x = 3
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Answer 2

11(15-7х)=-78+4х
165-77х=-78+4х
165+78=4х+77х
81х=243
х=243:81
х=3