5x + 2y = -17
x = 3y
5(3y) + 2y = -17
15y + 2y = -17
17y = -17
y = -1
x = 3(-1)
x = -3
(-3, -1)
2.) Solve the system by substitution.
x/3 + y = 4/3
-x + 2y = 11
y = -x/3 + 4/3
-x + 2(-x/3 + 4/3) = 11
-x -2x/3 + 8/3 = 11
-5x/3 = =25/3
-3/5(-5x/3) = 25/3(-3/5)
x = -5
(-5, 3)
3.) Solve the system by elimination.
2x - 3y = 0
2x + 6y = 3
4x -6y =0
2x +6y = 3
6x = 3
x = 1/2
y = 1/3
(1/2, 1/3)
4.) Solve the system by elimination.
3x - 5y =11
2x - 6y = 2
6x -10x = 22
-6x + 18y = -6
8y = 16
y = 2
x = 7
(7,2)
Hello! I need help with these math questions, thanks! :)
1.) Solve the system by substitution.
5x + 2y = -17
x = 3y
2.) Solve the system by substitution.
x/3 + y = 4/3
-x + 2y = 11
3.) Solve the system by elimination.
2x - 3y = 0
2x + 6y = 3
4.) Solve the system by elimination.
3x - 5y =11
2x - 6y = 2
4 answers
easy as pie peeps
Hello I need help with word problem.
Coffee shop sells small and large coffee in one day they sell 508 cups of coffee. IF they sell 3 times as many large cups of coffee as small cups of coffee, How many of each size coffee's does the shop sell in a day?
Coffee shop sells small and large coffee in one day they sell 508 cups of coffee. IF they sell 3 times as many large cups of coffee as small cups of coffee, How many of each size coffee's does the shop sell in a day?
127 small cups and 381 large cups.