Question

Упростите выражения 3(½x-1½)+2(¼x+½)

Answer 1

$\displaystyle 3\bigg(\frac{1}{2}x -1\frac{1}{2}\bigg) +2\bigg( \frac{1}{4}x+\frac{1}{2} \bigg) = \frac{3}{2}x-\frac{9}{2} +\frac{1}{2}x+1=\\\\\\\frac{4}{2}x-\frac{7}{2} =\boxed{2x-3,5}$