Question

Please answer these two! Thank you so much!!

Answer 1

X=5 I think because the other dude to be true idk but I have to answer a question to ask one so yea

Answer 2

Answer:

3. y = 1

4. y = 3, x = 12

Step-by-step explanation:

Like the question says, we'll be using substitution, so for the first one, we'll be substituting the value of x into the equation

x = 5

3x- 5y = 10

3 (5) - 5y = 10

15 - 5y = 10

5y = 15 - 10

5y = 5

y = 1

For the next one, it's a similar idea, except the value of x has the variable y in it, which is fine, as there is still only one value in the equation we'll be solving:

x = 4y

x + y = 5

4y + y = 5

5y = 15 (we needed to collect like terms to simplify)

y = 15/5

y = 3

we still have to find x, to this, we substitute the value of y into any of the equations:

x = 4y

x = 4 (3)

x = 12

Hope this helps,

Cate