(3/7+3)x7
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(5 x 3) - 7 = 8 X 3 = 24
A = 7. 4a + 3 - a = 24 4a - a = 21 3a = 21 a = 7
It is: (8-2)*(7-3) = 24
The modulus of a number relative to a base is the positive remainder when itis divided by that base. So -24 mod 7 = (-28 + 4) mod 7 = -28 mod 7 + 4 mod 7 = 4 mod 7 = 4while 24 mod 7 = (21 + 3) mod 7 = 21 mod 7 + 3 mod 7 = 3 mod 7 = 3.
(5+7)*(5-3)=12*2=24