1)
x - 16 = 126 : 9
x - 16 = 14
x = 14 + 16
x = 30
--------
2)
x + 5 = 224 : 28
x + 5 = 8
x = 8 - 5
x = 3
======
3)
x + 76 = 15 * 7
x + 76 = 105
x = 105 - 76
x = 29
========
4)
x - 3 = 144 : 36
x - 3 = 4
x = 4 + 3
x = 7
=======
5)
y - 8 = 84 : 21
y -8 = 4
y = 4 + 8
y = 12
=======
6)
x + 67 = 4 * 18
x + 67=72
x = 72 - 67
x = 5
===========================================
1)
7m * 4 = 252
28m = 252
m = 252 : 28
m = 9
========
2)
7n * 11 = 154
77n = 154
n = 154 : 77
n = 2
=======
3)
45 : 3m = 3
3m = 45 : 3
3m = 15
m = 15 : 3
m = 5
===========
4)
13n : 4 = 26
13n = 26 * 4
13n = 104
n = 104 : 13
n = 8
===========
5)
21m : 18 = 7
21m = 7 * 18
21m = 126
m = 126 : 21
m = 6
=========
6)
9n * 13 = 351
9n = 351 : 13
9n = 27
n = 27 : 9
n = 3
====================