(2/3 + 7/12) = (8/12 + 7/12) = 15/12
16/25 * 15/12 = 4/5 * 3/3 = 4/5
9/10:15/16 = 9/10 * 16/15 = 144/150 = 72/75
4/5 - 72/75 = 60/75 - 72/75 = -12/75
-12/75 = -4/25 = -0.16
1)32/100=16/50, 32%;
2)10/100=1/10, 10%;
3)72/100=36/50, 72%;
4)24/100=12/50, 24%;
5)65/100, 65%;
6)48/100=24/50, 48%.
Эти цифры будут: 6, 7, 8, и 9 6*7*8*9=3024
-3/4+8.5(2.1-2.51)=-3/4+8.5*(-0.41)=-3/4-3.485
-0.75-3.485=4,235
127*2=100*2=200
228*4=200*4=800
367*2=400*2=800
304*3=300*3=900
279*3=300*3=900
221*3=200*3=600
198*4=200*4=800
473*2=500*2=1000
189*4=200*4=800