1x+ 3y = -12x + 2y = 6
+12x +12x
13x + 3y = 2y = 6
+3y +3y
13x = 5y = 6
13x = 5y and 5y = 6
answer is 130 use calculator
I’m just gonna go with it’s 2 separate math questions
so for:2y+7x=-5
(In my answers If there is a slash between two numbers it means it is a fraction)
X= - 2y/7-5/7
Y= - 7x/2-5/2
For 5y-7x=12
X= 5y/7-12/7
Y=7x/5+12/5
Hope I could help

1) This is a question for Annuity usage. Note that we'll need the following formula below:

Note that P is the value you'll need to deposit each month so that in 35 years you'll have $400,000 for your retirement.