Explore Westonci.ca, the leading Q&A site where experts provide accurate and helpful answers to all your questions. Get detailed and accurate answers to your questions from a dedicated community of experts on our Q&A platform. Our platform provides a seamless experience for finding reliable answers from a network of experienced professionals.
Sagot :
Use simultaneous equations;
9x - 8y = 4
2x - 3y = -4
We can rearrange the second one to say that:
2x = 3y - 4
x = [tex] \frac{3y-4}{2} [/tex]
so;
9([tex] \frac{3y-4}{2} [/tex]) - 8y = 4
9(3y - 4) - 16y = 8
27y - 36 - 16y = 8
11y = 44
y = 4
We then substitute y = 4 back into an original equation
9x - 8y = 4
9x - 8*4 = 4
9x - 32 = 4
9x = 36
x = 4
Final answer;
x = 4, y = 4
9x - 8y = 4
2x - 3y = -4
We can rearrange the second one to say that:
2x = 3y - 4
x = [tex] \frac{3y-4}{2} [/tex]
so;
9([tex] \frac{3y-4}{2} [/tex]) - 8y = 4
9(3y - 4) - 16y = 8
27y - 36 - 16y = 8
11y = 44
y = 4
We then substitute y = 4 back into an original equation
9x - 8y = 4
9x - 8*4 = 4
9x - 32 = 4
9x = 36
x = 4
Final answer;
x = 4, y = 4
you could multiply the top equation by 3 and the bottom by -6 so then it would be:
27x-24y=12
-12x+24y=24
you can then get rid of the y since they cancel out each other, so you end up with:
27x=12
-12x=24
combine these two equations so you get:
15x=36
divide both sides by 15 so you get:
x=2.4
then plug x into one of the equations to find y:
2.4-3y=-4
subtract 2.4 from each side
-3y=-6.4
divide both by -3:
y=-2.13
so y=-2.13 and x=2.4
27x-24y=12
-12x+24y=24
you can then get rid of the y since they cancel out each other, so you end up with:
27x=12
-12x=24
combine these two equations so you get:
15x=36
divide both sides by 15 so you get:
x=2.4
then plug x into one of the equations to find y:
2.4-3y=-4
subtract 2.4 from each side
-3y=-6.4
divide both by -3:
y=-2.13
so y=-2.13 and x=2.4
We hope you found what you were looking for. Feel free to revisit us for more answers and updated information. Thank you for your visit. We're committed to providing you with the best information available. Return anytime for more. Your questions are important to us at Westonci.ca. Visit again for expert answers and reliable information.