50 points! 2 questions! solve the system of equations using the given methods. show your work.

63.y = -4 and x = 2

64. x = 3 and y = 5

Step-by-step explanation:

63.

We are given that

y = x - 6

x + y = -2

We need to use the substitution method, so let's find x in terms of y.

Adding 6 to both sides of the first equation, we get

x = 6 + y

Substituting 6 + y into the second equation, we get

(6 + y) + y = -2

2y + 6 = -2

2y = -8

y = -4

Now, solving for x, we get

x + (-4) = -2

x = 2

Checking our answer by substituting these into the first equation,

-4 = 2 - 6?

-4 = -4  

So that's all good

64.

x + y = 8

-x + 2y = 7

Adding the two equations together will eliminate the x variable, allowing us to solve for y. This is the addition/elimination method

3y = 15

y = 5

Putting y back into the first equation gives us

x + 5 = 8

x = 3

Checking our answer in the second equation, we get

-(3) + 2 (5) = 7?

-3 + 10 = 7?

7 = 7 :)

all work is pictured and shown

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*