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Systems of Linear Equations and Inequalities Videos 9 videos

SAT Math 1.1 Algebra and Functions
315 Views

SAT Math 1.1 Algebra and Functions. Find an algebraic equation to correspond with the data.

SAT Math 1.3 Algebra and Functions
220 Views

SAT Math 1.3 Algebra and Functions. How many 16 oz. bottles did she buy?

SAT Math 4.4 Algebra and Functions
197 Views

SAT Math 4.4 Algebra and Functions

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SAT Math 8.2 Algebra and Functions 175 Views


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Description:

SAT Math 8.2 Algebra and Functions

Language:
English Language

Transcript

00:03

Here’s your shmoop du jour, brought to you by simple equations.

00:06

Such as…you plus Netflix plus Papa John’s equals a depressing Saturday night.

00:14

Five less than six times a number is equal to 20 more than the number. What is the number?

00:22

Okay, this is just one of those “turn words into numbers” type problems.

00:26

We can’t find our magic scepter at the moment,

00:28

so we’re going to have to do this one manually. We’re told that we’re looking for a mysterious

00:34

number…so we’ll just label this variable x.

00:36

Five less than six times a number… or 6x minus 5.

00:41

20 more than the number is just 20 plus x. So our equation is:

00:46

6x - 5 = 20 + x.  All right, Combine like terms...

00:51

...so divide both sides by 5 and we get x = 5.

00:56

And that’s our answer.

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