Substitution and elimination, and matrix methods such as the Gauss-Jordan method and Cramer's rule. Use each method at least once when solving the sys

Brittney Lord

Brittney Lord

Answered question

2021-05-18

Substitution and elimination, and matrix methods such as the Gauss-Jordan method and Cramer's rule. Use each method at least once when solving the systems below. include solutions with nonreal complex number components. For systems with infinitely many solutions, write the solution set using an arbitrary variable.
x3y=7
3x+4y=1

Answer & Explanation

BleabyinfibiaG

BleabyinfibiaG

Skilled2021-05-19Added 118 answers

x3y=7 (1)
3x+4y=1 (2)
x=7+3y (3)
Putting value of xln eq 2
3(7+3y)+4y=1
properly 219y+4y=1
Combininb like terms (5y=20)
(Dividing each side by -5) 5y5=205y=4
Putting value of y in eq{˙3x±7+3(4)}
x=5
x3y=7|3x+4y=1
(5)3(4)=7|3(5)+4(4)=1
7=7|1=1
Solution set {5,4}

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