Question

Пж помогите
4*(1.2x+3.7)-2.8=5целих одна третья x

Answer 1

$4*(1,2x+3,7)-2,8=5\frac{1}{3}x\\\\4,8x+14,8-2,8=5\frac{1}{3}x \\\\4,8x+12=5\frac{1}{3}x\\\\4\frac{4}{5}x-5\frac{1}{3}x=-12$

$[(4-5)+(\frac{4}{5}-\frac{1}{3}]x=-12\\\\(-1+\frac{12-5}{15})x=-12\\\\(-1+\frac{7}{15})x=-12\\\\-\frac{8}{15}x=-12\\\\x=-12:(-\frac{8}{15})=12*\frac{15}{8}= 22,5$

Answer 2

Ответ:

x=22.5 x=45/2⊂(◉‿◉)つ