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32 votes
32 votes
-13 +76=-(-7b+6) solve for b

User Vptheron
by
2.5k points

1 Answer

12 votes
12 votes

Start by simplifying both sides.

-13 + 76 = -(-7b + 6)
Distribute the -1.
-13 + 76 = -1(-7b) + -1(6)
-13 + 76 = 7b - 6
63 = 7b - 6
Isolate the variable b.
63 + 6 = 7b - 6 + 6
69 = 7b
69/7 = 7b/7
9.86 = b
b = 9.86

User Nikola Dimitroff
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3.1k points