2 * 3/4 = 6/4 = 3/2 = <u>1 1/2</u>
7 * 1/3 = 7/3 = <u>2 1/3</u>
5/8 * 2 = 10/8 = 5/4 = <u>1 1/4</u>
1/6 * 3 = 3/6 = <u>1/2</u>
8 * 3/4 = 24/4 = <u>6</u>
5/9 * 6 = 30/9 = 3 3/9 = <u>3 1/3</u>
5 * 1/15 = 5/15 = <u>1/3</u>
НОД(532;665)=133
НОД(36;72;198)=18
Х+х+20=100
2х+20=100
2х=100-20
2х=80
х=80/2
х1=40
х2=40+20=60