va rog dau coroana!.
Răspunsuri la întrebare
Răspuns:
200 - 7 × 5 + a = 191
200 - 35 + a = 191
165 + a = 191
a = 191 - 165
a = 26
a - 9 × 6 + 15 = 360
a - 54 + 15 = 360
a - 69 = 360
a = 360 + 69
a = 429
10 × 7 + 819 - 5 × a = 889
70 + 819 - 5 × a = 889
889 - 5 × a = 889
889 - 889 = 5 × a
0 = 5 × a
a = 5 : 0
a = 0
9 ×9 + a - 6×7 = 532
81 + a - 42 = 532
81 + a = 532 + 42
81 + a = 574
a = 574 - 81
a = 493
7 × a + 210 - 3 × 6 = 227
7 × a + 210 - 18 = 227
7 × a + 192 = 227
7 × a = 227 - 192
7 × a = 35
a = 35 : 7
a = 5
4 × 6 + 205 - a × 8 = 205
24 + 205 - a × 8 = 205
229 - a × 8 = 205
229 - 205 = a × 8
24 = a × 8
a = 24 : 8
a = 3
3 × 9 + a - 8 × 5 = 186
27 + a - 40 = 186
27 + a = 186 + 40
27 + a = 226
a = 226 - 27
a = 199
619 - a × 4 + 93 = 696
619 - a × 4 = 696 - 93
619 - a × 4 = 603
619 - 603 = a × 4
16 = a × 4
a = 16 : 4
a = 4