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3 years ago

Directions - solve the liner system. enter your answer as an ordered pair. 2x + 3y = 31 y = x + 7

Mathematics

1 answer:

Leya [2.2K]3 years ago

8 0

(1) 2x + 3y = 31 y

(2) 2x + 3y = x + 7

(3) 31y = x + 7

(3) x = 31y - 7

(2) 2(31y - 7) + 3y = 31y - 7 + 7 ; 62y - 14 + 3y = 31y ; 34y = 14 ; y = 14/34 ; y = 7/17

(3) x = 31y - 7 ; x = 31*(7/17) - 7 ; x = (217 - 119)/17 = 98/17

x = 98/17 ≈ 5.76

y = 7/17 ≈ 0.41

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Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
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Left to Right

Algebra I

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