Solving Equations with Unknowns

In this video tutorial, Josh Farach from the Tech Math Channel presents a problem involving four unknown numbers that need to satisfy a set of equations. The tutorial guides viewers through labeling the unknowns, forming initial equations, and using the elimination method to derive new equations. By solving these simultaneous equations, the values of the unknowns are determined. The tutorial concludes with a verification of the solution, ensuring the correctness of the answer. Viewers are encouraged to try solving the problem themselves before watching the solution process.

What is the sum of the first pair of numbers in the problem?

• 6

• 8

• 12

• 10

Tags

CCSS.6.EE.B.6

Which letter is used to label the first unknown number?

• D

• B

• A

• C

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the result of eliminating 'a' from the first set of equations?

• 5

• 3

• 6

• 4

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the sum of C and B in the second set of equations?

• 12

• 13

• 14

• 15

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the value of C after solving the equations?

• 8.5

• 9.0

• 10.0

• 9.5

Tags

CCSS.6.NS.B.3

What is the value of the unknown number that, when added to 9.5, equals 13?

• 4.5

• 4.0

• 3.5

• 3.0

Tags

CCSS.6.NS.B.3

What is the value of the unknown number that, when added to 3.5, equals 8?

• 5.5

• 5.0

• 4.5

• 4.0

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the final verification step in the solution?

• Checking if all equations are satisfied

• Recalculating all values

• None of the above

• Rewriting the equations

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the main method used to solve the equations in this video?

• Trial and Error

• Elimination

• Substitution

• Graphing

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What should viewers do if they have math problems or video requests?

• None of the above

• Both A and B

• Email the channel

• Comment below