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1. Află factorul necunoscut:
a x 3 = 27
9 x a = 63
a x 8 = 48
7 x = 42
5x a = 50
8x a = 8
(3 + 4) x a = 56
a x (25 - 17) = 72
(100 - 91) x a = 36
ax (4 + 5) = 45
(1000 - 992) x a = 48
a x (10 - 10) = 0
ax 5 x 5 = 25
2 x 4 x a = 40
ax2x3 = 24
9 x 1 x a= 81
3 xax 2 = 54
axax 8 = 32​