Question

Розв'яжить ривняня (х очень

Answer 1

$(x + \frac{5}{12} ) - \frac{9}{20} = \frac{11}{15}$

$(x + \frac{5}{12}) = \frac{11}{15} + \frac{9}{20}$

$x + \frac{5}{12} = \frac{11 \times 4}{60} + \frac{9 \times 3}{60}$

$x + \frac{5}{12} = \frac{44 + 27}{60}$

$x + \frac{5}{12} = \frac{71}{60}$

$x = \frac{71}{60} - \frac{5}{12}$

$x = \frac{71}{60} - \frac{5 \times 5}{60}$

$x = \frac{71}{60} - \frac{25}{60}$

$x = \frac{71 - 25}{60}$

$x = \frac{46}{60}$

$x = \frac{23}{30}$

Answer 2

$(x+\frac{5}{12})-\frac{9}{20} =\frac{11}{15}\\\\x+\frac{5}{12}-\frac{9}{20}-\frac{11}{15}=0\\\\x+\frac{25}{60}-\frac{27}{60}-\frac{44}{60}=0\\\\x+\frac{25-27-44}{60}=0\\\\x-\frac{46}{60} =0\\\\x=\frac{23}{30}$

ответ: $x=\frac{23}{30}.$