Simplify. 12−3(12+1)2 enter your answer, as a simplified fraction, in the box.

12−3(12+1)2

Add 12+1 first

12+1=13

12-3(13)(2)

12-3*13*2

Multiply first

12-39*2

12*-78

=-66

-66

→12-3×(12+1)×2

=12-3×(13)×2Adding number under the smaller bracket

=12-39×2--Multiplying first two numbers , as Rational numbers satisfy associative property with respect to multiplication.→a×(b×c)=(a×b)×c=(a×c)×b

=12-78

One rational number is positive and other larger rational number is negative, so sign behind result will be that of larger rational number.

= -66

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