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ACT Math 3.2 Elementary Algebra 547 Views
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Description:
ACT Math: Elementary Algebra Drill 3, Problem 2. Solve for z, when x = 2 and y = 5.
Transcript
- 00:03
Here's an unshmoopy question you just might find on an exam somewhere in life...
- 00:06
Solve for z, when x = 2 and y = 5. 3x + 4y = z
- 00:12
And here are the potential answers...
- 00:17
OK so what is this question asking?
- 00:18
Well it's really a plug and play deal.
Full Transcript
- 00:21
Just substitute 2 for x and 5 for y and we get to the promised land.
- 00:28
We have 3x plus 4y, which becomes 3 times 2 plus 4 times 5 or... 6 plus 20...
- 00:35
...which totals 26.
- 00:36
E. Done.
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You don't want to leave a bunch of unsolved rational equations sitting around.
Solving inequalities using blob fish? Yes, please!