1) 1000+270=1270 2) 504-90=414
1. 6х = 1,26
х = 0,21
2. 8х = 1,92
х = 0,24
1. 3 21/25 + 1 2/5=3 21/25+1 10/25 =4 31/25=5 6/25
2. 4 13/16 - 2 3/8=4 13/16 - 2 6/16=2 7/16
3. 5 5/6 - 31/48=5 40/48 - 31/48=5 9/48=5 3/16
36 = 3*12 21= 3*7 y = 3(12x-7) = 3(12*17 - 7) = 591 y= 591