Using the substitution method to solve the system. 5x+2y=5 x=3y-16

Question

Mathematics

Angelique Parrish

6 November, 16:17

Using the substitution method to solve the system. 5x+2y=5 x=3y-16

+1

Answers (2)

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Jolie Russell · Answer 1

5x+2y=5

x=3y-16

5 (3y-16) + 2y=5

15y-80+2y=5 collect the like terms

15y+2y=5+80

17y=85 divide both sides by 17

y=5

5x+2 (5) = 5

5x+10=5

5x=-5

x=-1

so x=-1 and y=5

Harold Mccullough · Answer 2

5x + 2y = 5

Since, x = 3y - 16

Therefore,

5 (3y - 16) + 2y = 5

15y - 80 + 2y = 5

17y = 85

y = 5

therefore,

x = - 1

y = 5