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clculeaza (3x7-4x4)x7-2x(1+3x3)


Răspuns :

(21-16)×7-2×(1+9)=5×7-2×10=35-20=15
(3 x 7 - 4 x 4) x 7 - 2 x (1 + 3 x 3) = (21 - 16) x 7 - 2 x (1 + 9) = 5 x 7 - 2 x 10 =
= 35 - 20 = 15