Solve using substitution. x + 3y = -13 5x + 7y = -9

2 answers:

6 0

X+3y=-13
x=-3y-13
5(-3y-13) +7y = -9
-15y -65 +7y = -9
-8y-65=-9
65 -
-----
-74
/-8
------
y= 9.25

x+3(9.25) = -13
x+27.75= -13
27.75-
-------
x= -40.75

ipn [44]3 years ago

6 0

<span>Just add -3y to both of the sides:

x + 3y + -3y = -13 + -3y

x = -3y - 13

Our Answer:

x = -3y - 13
_______________________________________________________

Add -7y to both of the sides.

5x + 7y + -7y = -9 + -7y

5x = -7y - 9

Then, divide both by 5.

5x
___ = -7y - 9
5 _____
5

Our Answer: </span> 5x
___ = - 7y -9
5 _____
5

_________________________________________________________

Hope This Helps!!!

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Liam went to the zoo with his parents and a ticket for the zoo cost's him $5.3. It costs an adult $10.70. How much would it cost

jarptica [38.1K]

Answer:

If 4 more kids came to the zoo with Liam and his two parents, and so did 4 more adults, the price they would pay would be:

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90.7

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Let me know if this helps!

5 0

2 years ago

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