Question

Найди значения выражений. 21 : ( 63 : ( 207 - 198 ))= ....., 468 + 254 - 5 * ( 28 + 106 ) =....!

Answer 1

1) 21 : ( 63 : ( 207 - 198 ) ) = 21 : ( 63 : 9 ) = 21 : 7 = 3;

2) 468 + 254 - 5 * ( 28 + 106 ) = 722 - 5 * 134 = 722 - 670 = 52;

Answer 2

207-198=9 63/9=7 21/7=3

28+106=134
468+254=722