HeatherLynch
HeatherLynch HeatherLynch
  • 23-02-2016
  • Mathematics
contestada

Solve the system of linear equations by elimination. x+y=3 x−y=1

Respuesta :

Аноним Аноним
  • 23-02-2016
This is easy because they y's will cancel out. I love this method it's the easiest one out of substitution, and graphing. 

So the Y's will cancel out an you will get x=2. Then you plug the 2 in for x in the first equation. so it will 2+y-3. You subtract 2 from both sides to get y=1.

So the ordered pair is(2,1)   :)
Answer Link

Otras preguntas

simplify 7/12 + 11/15
Two fewer than a number doubled is the same as the number decreased by 38. if n is "the number," which equation could be used to solve for the number?
The record must be copied exactly as it appears on the census form. The U.S. Census Bureau CANNOT make changes even though it realizes that enumerators may have
Prove that p+q+r=180
help me with #14 please!!!!
Which planet has the most moons?
Suppose there are 297 students going on a field trip. If each schoolbus carries 58 students, estimate the number of buses needed to carry all students.
The frequency of a sound wave is determined by the ????
Suppose you know that ∠ S and ∠ Y are complementary, and that m ∠ S = 3(m ∠ Y) − 110 ° . Find m ∠ Y.
What is the number of valence electrons in potassium?