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katrin2010 [14]
3 years ago
13

Solve the system of equations using the substitution method. ​ ​ x = −2 2x + 5 = y

Mathematics
2 answers:
alexdok [17]3 years ago
8 0

\text{Solve by plugging -2 to x:}\\\\\text{We know this by the question identifies what the value of x is}\\\\2(-2)+5=y\\\\\text{Solve:}\\\\2(-2)+5=y\\\\-4+5=y\\\\\boxed{1=y}

dimaraw [331]3 years ago
3 0

Answer:

y = 1

Step-by-step explanation:

x=-2\\2x+5=y

2(-2)+5=y\\-4+5=y\\1=y

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Solve this equation: 80 = 3y + 2y + 4 + 1.
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Let us first write down the given equation.
80 = 3y + 2y + 4 + 1
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75 = 5y
Just reversing both sides we get
5y = 75
Now dividing both sides by 5 we get
y = 15
So the value of y is 15. I hope the procedure for solving the problem is clear to you. In future you can solve such problems with ease following the procedure described.



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Fernando bought 8 pints of milk. How many fluid ounces of milk did Fernando buy?
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Answer:

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