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3 years ago

Solve (5b+9)(8-3b)=0

Mathematics

1 answer:

AysviL [449]3 years ago

7 0

Answer:

b = 8/3 or b = -9/5

Step-by-step explanation:

Solve for b over the real numbers:

(5 b + 9) (8 - 3 b) = 0

Split into two equations:

8 - 3 b = 0 or 5 b + 9 = 0

Multiply both sides by -1:

3 b - 8 = 0 or 5 b + 9 = 0

Add 8 to both sides:

3 b = 8 or 5 b + 9 = 0

Divide both sides by 3:

b = 8/3 or 5 b + 9 = 0

Subtract 9 from both sides:

b = 8/3 or 5 b = -9

Divide both sides by 5:

Answer: b = 8/3 or b = -9/5

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