SOLUTION: How do I solve -2(7-y)+4=-4

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Question 1091750: How do I solve -2(7-y)+4=-4
Found 3 solutions by MathLover1, ikleyn, greenestamps:
Answer by MathLover1(20849) About Me  (Show Source):
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
-2*(7-y) + 4 = -4   ====>

-2*7 + 2y + 4 = -4  ====>  subtract4 from both sides  ====>

-14 + 2y = -8   ====>  add 14 to both sides

2y = -8 + 14

2y = 6  ====>  y = 6%2F2 = 3.


Answer.  y = 3.


You may check this solution on your own by substituting the value y= 3 into the original equation.

Solved.

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    - HOW TO solve a linear equation
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Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!

I personally would not use the distributive law to simplify the expression on the left, as the other tutors who answered your question have done.

-2%287-y%29%2B4+=+-4

(1) Move the "4" on the left to the right side, to get the term containing the variable by itself:

-2%287-y%29+=+-8

(2) Divide both sides by -2:

7-y+=+4

From there the answer y=3 is easy to see, or to find using formal algebra.