Question

simplify 3y (2y-7) -3(y-4)-63 and evelate for y =-1​

Answer 1

Answer:

Given ,

▫️y = - 1

so ,

$3y(2y - 7) - 3(y - 4) - 63 \\ \\ = 3( - 1)(2 \times - 1 - 7) - 3( - 1 - 4) - 63 \\ \\ = - 3( - 2 - 7) - 3( - 5) - 63 \\ \\ = - 3 \times( - 9) - 3 \times ( - 5) - 63 \\ \\ = 27 + 15 - 63 \\ \\ = 42 - 63 \\ \\ = - 21$

hope this much helps uh ❣️