Question

1. Реши уравнение
240 . x +560=1680:6

Answer 1

$240x + 560 = 1680$ ÷ $6$

$240x + 560 = 280$

$240x = 280 - 560$

$240x = -280$

$240x$ ÷ $240 = -280$ ÷ $240$

$x = -280$ ÷ $240$

$x = -\frac{280}{240}$

$280$ ÷ $40 = 7$

$240$ ÷ $40 = 6$

$x = -\frac{7}{6}$

____

$240$ × $-\frac{7}{6} + 560 = 1680$ ÷ $6$

$240$ × $-\frac{7}{6} + 560 = 280$

$-280 + 560 = 280$

$280 = 280$

Ответ: $x = -\frac{7}{6}$