# TSI Math: Solving a "Murder" of Equations

What is the value of x in the following system of equations?

Elementary Algebra and Functions | Linear Equations, Inequalities, and Systems |

Mathematics and Statistics Assessment | Linear Equations, Inequalities, and Systems |

Product Type | TSI |

TSI | Mathematics and Statistics Assessment TSI Math TSI Mathematics |

TSI Math | Elementary Algebra and Functions |

TSI Mathematics | Elementary Algebra and Functions |

Test Prep | TSI |

### Transcript

swarm If only there were geese or these In any

case all the equations go together The values of x

y ens e are the same in each We can

only solve an equation when it contains a single variable

So we have to start by finding z kind of

like nemo and then working our way up to solve

for acts So let's get going Divide both sides of

the bottom equation Negative for z equals negative twenty by

negative four to find that z equals what is that

Five Alright Well armed with the knowledge that zia's five

we can solve for why plugs equals five into the

middle equation right there Three white minus in the business

of eight And then we're going to simplify the left

side there What is that Three y minus fifty is

negative eight and we'll add fifty to both sides and

we get three Why is forty two Well bible side

by three And why is fourteen All right Almost there

Final steps plug in the z Equals five in the

y equals fourteen in the top equation there and we

get five x minus y plus seventy is negative Nine

solve for x and that'd be five Acts minus 14

plus the 30 five There is negative nine combined like

terms and subtract twenty one from both sides There we

go we get five x equals negative nine months one

negative thirty Okay now we just divide both sides by

five And guess what Acts is negative 6 wu The

answer is eight mystery solved by your counting crows here 00:01:47.99 --> [endTime] what's a bunch of crows called yes murder What