5a + 9 7 + 9 + 6 5 + 7 7 - 31p 11p + 6p 5y 2y y 4y + 4y + 2y

4a + 6 + 35a + 7 = 3a + 17 + 3a + 14= k + 35 + 4k + 26=

4a + 6 + 35a + 7 =

39a + 13

3 + 7 + 18 = 178, 3 + 7 + 18 = 178, 10 + 18 = 178, 10 = 178 18, 10 = 160, = 160:10, = 16, : = 16.

(2384 + 2692) : (303 195) =

47

23, 21, 7 203, 12, 70 32, 17, 12

)34 + 17 = 1173 51x = 1173 x = 1173: 51 x = 23 : 23 )7 - 27 = 99 6 - 27 = 99 6 = 99 + 27 6 = 126 = 21 : 21 )15z z 16 = 82 14z = 82 + 16 14z =98 z = 98: 14 z=7 : 7

23, 21, 7 203, 12, 70 32, 17, 12

580, . 88 , 9. + 9. , 220, : + 9 = 220, 10 = 220, = 220 : 10, = 22 () 22 * 9 = 198 () : 22 198 .

581, . 88 , 3. 3 - . , 24 . , : 3 - = 24, 2 = 24, = 24 : 2, = 12 (. ) - : 12 . .

!

!2

/ 622, 625 (,)