To solve a system of two linear equations, first solve one equation for one variable, then substitute that expression into the other equation to find the remaining variable. For the system 2x + y = 11 and x - y = 1, solving the second equation for y gives y = x - 1. Substituting into the first equation yields 2x + (x - 1) = 11, which simplifies to 3x - 1 = 11, then 3x = 12, so x = 4.
Installez notre extension pour rechercher instantanément dans n'importe quelle vidéo
EOC Algebra 1 challenge!Ajouté :
EOC Algebra 1 challenge! Can you solve this before the timer ends? We have the system: Two x plus y equals eleven, and x minus y equals one. We need to find the value of x. Step one: solve the second equation for y. Start with x minus y equals one. Subtract x from both sides. Negative y equals negative x plus one. Now multiply by negative one. y equals x minus one. Step two: substitute into the first equation. Two x plus x minus one equals eleven. Combine like terms. Three x minus one equals eleven. Add one to both sides. Three x equals twelve. Now divide by three. x equals four. So the correct answer is… choice C, four! Did you get it right? Follow for more Algebra 1 EOC practice!
Vidéos Similaires
A Number Plus 5 Is 12
MathGirlTutor
101 views•2026-06-03
Olympiad Mathematics | Indian | Can You Solve This One?
PhilCoolMath
650 views•2026-06-03
Escaping the Fog
LogicLemurGaming
760 views•2026-06-03
H2 Math June Holiday 2026 Intensive Revision | H2 Math Tuition by Achevas #singaporemath #h2math
AchevasTV
304 views•2026-06-01
A Brutal Radical Expression Made Easy! The Shortcut Changes Everything.
tamoshop
112 views•2026-06-02
V : jee main /advance class 11 mathematics : Binomial Theorem class-1 ( 29 may 2026 )
dcamclassesiitjeemainsadva9953
125 views•2026-05-29
Is This Pentomino Tileable?
3cycle
241 views•2026-05-30
This Sudoku Has Many Lines!!
CrackingTheCryptic
2K views•2026-05-29
