Respuesta :
Answer:
y = [tex]\frac{-25}{7}[/tex] or -3.571
x = [tex]\frac{10}{7}[/tex] or 1.429
Step-by-step explanation:
x - y = 5
x = 5 + y
Solve for y:
y = -6x + 5
y = -6(5 + y) + 5 Substitute x with 5 + y
y = -6(5) - 6y + 5
y = -30 - 6y + 5
y + 6y = -30 + 5
7y = -25
y = [tex]\frac{-25}{7}[/tex] or -3.571
Solve for x:
x = 5 + y
x = 5 + -25/7
x = [tex]\frac{10}{7}[/tex] or 1.429
Step-by-step explanation:
1. make y=-6x+5 equation 1 and make x-y=5 equation 2
2.subtitute equation 1 into equation 2:
x-(-6x+5)=5
3.multiply - into the bracket:
x+6x-5=5
4.transpose -5 to the other side:
x+6x=5+5
x+6x=10
5.Add the like terms which are x and 6x:
7x=10
6.divide both sides by 7:
7x/7=10/7
x=10/7
8.subtitute your answer back to your second equation:
(10/7)-y=5
-y=5-10/7
-y=25/7
9.divide both sides by -
y=-25/7
