nathen11 nathen11

21-04-2020
Mathematics

contestada

Solve the System by Substitution.
Write solution as an ordered pair. (x,y)
y= x + 1
3x + 7y = 57

Respuesta :

annie1129 annie1129

21-04-2020

Answer:

(5, 6)

Step-by-step explanation:

3x + 7y = 57

Substitute y= x+1

3x + 7(x+1) = 57

3x + 7x + 7 = 57

3x + 7x = 57-7

3x + 7x = 50

10x = 50

x = 5

y= x+1= 5+1 = 6

(5, 6)

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