630 + х = 248 ● 4 42 : х = 70 : 5 х – 51 : 17 = 8 48 : х = 57 - 49
х ● (27 + 5)= 128
(31 + 11) : х = 7
(40 - 25) + х = 33
630 + х = 248 ● 4
6 ● 7 + х = 414 : 6
(52 - 11) - х = 18
15 ●(78:13) – х = 76 (450 – х) = 37 ● 12
150 + (х+40) = 75
140 : (68 - х)=7
6 ●(х+48) = 540
(73 - х) ● 60 = 480
(х + 16) : 8 = 560 х – 6299 = 4328
(2587 + х) + 524 = 8019 х : (2●5) = 140 х●7 = 1000 - 146 х - 163 = 423●3
490:х=15+53
510 : 3 + х = 800 153 : х = 51 : 3 х : (13 ● 3 ) = 7
х ● (112 : 4)= 168
(19 ● 4) ● х = 912 х : 7 = 23 ● 2 х ● 14 = 672 : 6 х + 15 = 80 : 4
х + 60 ● 5 = 500
2 ● х = 782 : 34 + 15 500 – 327 + х = 345
х + 285 = 36 ● 12
х – (195 + 376) = 123
435 – х = 414 : 6
39 ● х = 6000 2139 х – 2600 =
438900-38900 х – 127 = 160 ● 4
х – 51 : 17 = 8
360 : (х - 68) =
90
(х – 18)● 25 =
500
х + 7 = 510 : 17
(2960 - 2078) : х = 42