Question

Помогите y:1,2=1 2/3
0,6x=9/20
5/6y=0,5

Answer 1

у÷1,2=1ц2/3
у=1ц2/3×1,2
у=5/3×1ц2/10
у=5/3×12/10
у=60/30
у=2
0.6х=9/20
х=9/20÷6/10
х=9/20×10/6
х=90/120
х=3/4
5/6у=0,5
у=1/2÷5/6
у=1/2×6/5
у=6/10=3/5