anhthuxnguyen anhthuxnguyen

18-09-2016
Mathematics

contestada

Determine for what values of x and y are the following equalities always true.

(k+1)x-(2k+3)y-3k-5=0

Respuesta :

Kunchan Kunchan

18-09-2016

(k+1)x-(2k+3)y-3k-5=0
kx + x - 2ky - 3y - 3k - 5 = 0
(x - 2y) k + (x - 3y) = 3k + 5

therefore
x - 2y = 3
x - 3y = 5

Subtract 2 equations
y = -2
x = -1

Answer Link

Otras preguntas

What country was able to repel a massive, but poorly coordinated attack by forces from Syria, Lebanon, Egypt, Jordan, Iraq, and Saudi Arabia? A.Bahrain B.Iran C

What important victory did one founder of the Carolingians achieve? A.He convinced all Europeans to convert to Christianity. B.He won the title of first warrior

jean mixed 3 1/3 qt of yellow paint and 2 1/3 qt of blue paint to make green paint How many quarts of green paint did Jean make?

The branch of a land plant growing near water is completely submerged under water.Afew of its leaves float on the water.will photosynthesis occur in these leav

What was the main difference between French conservatives and liberals following the congress of Vienna

What was the great schism?

What best describes why Germany felt the Treaty of Versailles was unfair? A. The treaty did not honor earlier agreements about surrender. B. The treaty was more

What does the word treasure refer to mean?Why do you think the author used this word?

Which outline entry uses correct punctuation? A. 1—Team B. B, Land C. A Water D. I. Sports

Which is the best estimate for the length of house? A. 12 yards B. 12 feet C. 12 miles D. 12 inches