Решительно плиз -9(8-9х)=4х+5 1-5х=-6х+8

Question

Решительно плиз -9(8-9х)=4х+5 1-5х=-6х+8

Answer 1

-9 * (8 - 9х) = 4х + 5
-72 + 81x = 4x + 5
77x = 77
x = 1

1 - 5x = -6x + 8
6x - 5x = 8 - 1
x = 7

Comments

а 77/77 = 1 !!!!! исправьте.)))))))))

Answer 2

-72 + 81x = 4x + 5
81x - 4x = 5 + 72
77x = 77
x = 77 /77
x = 1

1 - 5x = - 6x + 8
6x - 5x = - 1 + 8
x= 7

Comments

81x - 4x = ? (77х)

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спасибо!!!