Question

If a + b = -1a+b=−1a, plus, b, equals, minus, 1 and x + y + z = 2x+y+z=2x, plus, y, plus, z, equals, 2, what is 7a + 7b + 6z + 6x + 6y7a+7b+6z+6x+6y7, a, plus, 7, b, plus, 6, z, plus, 6, x, plus, 6, y?

Answer 1

5

Explanation:

a+b=-1

x+y+z=2

7a+7b+6z+6x+6y=7(a+b)+6(z+x+y)=7(-1)+6(2)=-7+12=5