Solve for y: 1/2 y - 7 = -24

-42

Step-by-step explanation:

First, add 7 to both sides, then you have 0.5y=-21, then simply divide by 0.5 on both sides( remember dividing by a fraction is simply multiplying by a whole number, in this case 2 because the fraction is 1/2) which gives you y=-42.

Y = 1/2y - 7 = -24

1/2 x 62 = 31

   31 - 7 = 24

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents