Решите уравнения:
1)8x-3x+43=108
2)9y+2y-19=102
3)14x-7x-42=21
4)8y-3y+7y=156​

1) \(8x - 3x + 43 = 108\)
Упростим: \(5x + 43 = 108\)
\(5x = 108 - 43\)
\(5x = 65\)
\(x = 65 : 5\)
\(x = 13\)

2) \(9y + 2y - 19 = 102\)
\(11y - 19 = 102\)
\(11y = 102 + 19\)
\(11y = 121\)
\(y = 121 : 11\)
\(y = 11\)

3) \(14x - 7x - 42 = 21\)
\(7x - 42 = 21\)
\(7x = 21 + 42\)
\(7x = 63\)
\(x = 63 : 7\)
\(x = 9\)

4) \(8y - 3y + 7y = 156\)
\((8 - 3 + 7)y = 156\)
\(12y = 156\)
\(y = 156 : 12\)
\(y = 13\)

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