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TSI Math: Solving an Equation with Two Unknown Variables 5 Views


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Description:

Solve for p.
T = p – 0.2p


Transcript

00:02

All right sy Match members We've got another directive from

00:05

the head office here Solve for p all right so

00:12

we got the eagles p minus point to pee All

00:15

right So how do we solve for p p equals

00:18

what That's we got two D'oh Well someone for p

00:20

looks a bit scary here because there's two p's and

00:23

one has a decimal coefficient and seeing the terms as

00:27

like terms help simplify the right side And while placing

00:30

a one in front of the p makes the values

00:33

that should be subtracted way clear So i got t

00:35

equals one p minus point to p or t equals

00:39

point eight p all right well that makes it a

00:41

lot easier We'll divide both sides by point eight We

00:45

got t over point eight is p or p equals

00:48

t over point eight All right Well it's not even

00:51

answer choice We're looking here You see it anywhere Nope

00:54

Ain't there It's a problem Well none of the answer

00:56

choices air decimal So we've got to make this thing

00:58

a fraction so let's Think about it Making our equation

01:02

conform A cement of changing point Eight two eight over

01:06

ten right You'd agree Those were the same thing So

01:09

let's Think about this instead of point Eight times P

01:11

let's Make it eight tense times being reduced that to

01:14

four fifths times P and all right but we've got

01:18

a solve for p so we gotta multiply both sides

01:21

by i five force And if we do that well

01:24

guess what we got P equals five force t or

01:27

five t over four which is answer c and we're 00:01:30.864 --> [endTime] done

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