saraluba2010 saraluba2010

28-11-2015
Mathematics

contestada

If 5x+15y=45 then 6x-18y=?

Respuesta :

apologiabiology apologiabiology

28-11-2015

so we have 5x+15y=45
simplify and undistribute 5 from both sides
5(x+3y)=5(9)
divide both sides by 5
x+3y=9
multiply both sides by 6
6x+18y=54

if it was 6x+18y then the answer is 54
if it was 6x-18y, then I don't know the answer

Answer Link

Otras preguntas

The two epics written by Homer the Illiad and the Odyssey are considered to be what's known as Primary epics. The third book written by Virgil, The Aeneid , is

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should

The coordinates of the vertices of ANGLE PQR are P(-3,3), Q(2,3), and R(-3,-4). Find the side lengths to the nearest hundredth and the angle measures to the nea

Does the green tea have coffein ???

How many parrallel lines does a triangle,square,trapezoid,pentagon

How many parrallel lines does a triangle,square,trapezoid,pentagon

The coordinates of the vertices of ANGLE PQR are P(-3,3), Q(2,3), and R(-3,-4). Find the side lengths to the nearest hundredth and the angle measures to the nea

a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound. Find out how much of each should

Your model locomotive is 16 inches long. It is an exact model of a locomotive that is 40 feet long. A window on the locomotive is how many times wider than a wi