Question

Simplify 3 Y (2y-7)-3(-y-4)-63 and find its value for
Y= - 2

Answer 1

Answer:

On substituting the value of y as -2

=3×-2 (2×-2 -7) -3(-(-2) -4) -63

=3×4×7×6×-12-63

=12×21×42×-12-63

=21×42 - 63

=884-63

=821