Explicación paso a paso:
1.
81 (143) 62 = 81 + 62 = 143
39 (88) 49 = 39 + 49 = 88
57 (x) 96 = 57 + 96 = 153
x = 153
2.
69 (28) 41 = 69 - 41 = 28
37 (12) 25 = 37 - 25 = 12
98 (x) 14 = 98 - 14 = 84
x = 84
3.
24 (12) 15 = 2 + 4 + 1 + 5 = 12
17 (16) 62 = 1 +7 +6 +2 = 16
28 (x) 43 = 2 + 8 + 4 + 3 = 17
x = 17
4.
24 (408) 17 = 24 * 17 = 408
15 (630) 42 = 15 * 42 = 630
19 (x) 25 = 19 * 25 = 475
x = 475
Espero te sirva (~ ̄▽ ̄)~.
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Explicación paso a paso:
1.
81 (143) 62 = 81 + 62 = 143
39 (88) 49 = 39 + 49 = 88
57 (x) 96 = 57 + 96 = 153
x = 153
2.
69 (28) 41 = 69 - 41 = 28
37 (12) 25 = 37 - 25 = 12
98 (x) 14 = 98 - 14 = 84
x = 84
3.
24 (12) 15 = 2 + 4 + 1 + 5 = 12
17 (16) 62 = 1 +7 +6 +2 = 16
28 (x) 43 = 2 + 8 + 4 + 3 = 17
x = 17
4.
24 (408) 17 = 24 * 17 = 408
15 (630) 42 = 15 * 42 = 630
19 (x) 25 = 19 * 25 = 475
x = 475
Espero te sirva (~ ̄▽ ̄)~.