Question

На скрине задачи зделаите пж

Answer 1

Ответ:

$4.5x:2.7=9:1.8\\4.5x*1.8=2.7*9\\8.1x=24.3\\x=24.3/8.1\\x=3$

$7\frac{1}{3}/1\frac{5}{6}=0.6x:0.75\\7\frac{1}{3}*0.75=0.6x*1\frac{5}{6}\\5\frac{1}{2}=1.1x\\5.5=1.1x\\x=5.5/1.1\\x=5$

$\frac{3x+1.6}{2.4}=\frac{5}{1.2} \\3x+1.6:2.4=5:1.2\\(3x+1.6)*1.2=5*2.4\\3.6x+1.92=12\\3.6x=10.08\\x=10.08/3.6\\x=2.8$

$\frac{5.4}{3}=\frac{0.9}{4.7x-4.2} \\5.4:3=0.9:(4.7x-4.2)\\5.4*(4.7x-4.2)=3*0.9\\25.38x-22.68=2.7\\25.38x=25.38\\x=25.38/25.38\\x=1$

Пошаговое объяснение: