Question

решите уровнение г, д,е

Answer 1

$x*2 \frac{1}{2} = 1 \\ x* \frac{5}{2} = 1 \\ x = 1: \frac{5}{2} \\ x = 1* \frac{2}{5} \\ x= \frac{2}{5} \\ \\ OTBET:\frac{2}{5}$


$\frac{3}{10} *x=1 \frac{1}{9} \\ \\ \frac{3}{10} *x= \frac{10}{9} \\ \\ x= \frac{10}{9} : \frac{3}{10} \\ \\ x= \frac{10}{9} * \frac{10}{3} \\ \\ x= \frac{100}{27} \\ \\ x=3 \frac{19}{27} \\ \\ OTBET:3 \frac{19}{27}$


$3*x=5 \\ x=5:3 \\ x= \frac{5}{3} \\ x=1 \frac{2}{3} \\ \\ OTBET:1 \frac{2}{3}$

Answer 2

г)х•2 1/2=1
х=1:2 1/2
х=2/5
д)3/10•х=1 1/9
х=1 1/9:3/10
х=3 19/27
е)3•х=5
х=5:3
х=1 2/3