Answered

At Westonci.ca, we provide reliable answers to your questions from a community of experts. Start exploring today! Discover comprehensive solutions to your questions from a wide network of experts on our user-friendly platform. Discover detailed answers to your questions from a wide network of experts on our comprehensive Q&A platform.

Solve the system by substitution. y=-3, -3x-5y=6

Sagot :

brncomondi

Answer:

x=3

Step-by-step explanation:

-3x-5y=6

-5 times -3 = 15

-3x+15=6

+3x on both sides

15=6+3x

-6 on both sides

9=3x

divide by 3 on both sides

x=3

If we have the substitution for y, replace the y in the equation with -3
-3x-5(-3)=6
Multiply the -5 with the -3, and when you multiply a negative number with a negative it turns into a positive
-3x+15=6
Bring the 15 over to the other side of the equation to get the x number by itself like this —-> -3x=6-15 and when you cross over a number to the other side of the equation it’s positive or negative sign changes into the opposite
Now subtract
-3x=-9
Divide
-3x = -9
—— ——
-3 -3
And a negative number divided by a negative also makes the number a positive
X=3
Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Thank you for visiting. Our goal is to provide the most accurate answers for all your informational needs. Come back soon. Keep exploring Westonci.ca for more insightful answers to your questions. We're here to help.