Question

Решите уравнение 7(3х + 6) = 2 х + 98.

Answer 1

7(3х+6)=2х+98
21х+42=2х+98
21х-2х=98-42
19х=56
х=56:19
х=3

Answer 2

21x+42=2x+98
21x-2x=-42+98
19x=56
x=56/19
x=2.9
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