lexicook0915 lexicook0915

25-11-2016
Mathematics

contestada

Solve for x?
2x + y = 7
x - y = 5

Respuesta :

symantha777 symantha777

25-11-2016

x=4 because the y cancel out and all your left with is 3x=12 the you divide by 3 and get 4

Answer Link

Аноним Аноним

25-11-2016

given 2x+y=7...1
x-y=5...2
put x=5+y in 1
2(5+y)+y=7
10+2y+y=7
3y=-3
y=-1
x=5+y
=5-1
=4

Answer Link

Otras preguntas

What is a criticism of the two-party system? It impacts election outcomes by pulling voters from another candidate. It favors liberal over conservative ideologi

A 10 gallon tank of gas cost 22$. Find the unit price per gallon

What is the summation notation for the geometric series 5 10 20 40 80?

In order to either condense or expand logarithms using their properties, what must be? Group of answer choices the need the same exponent they need the same ans

helpppp please please

whats the difference between-2/3 and-1/4=

Spanish please help!

Recalling the list of common traits of gothic literature in unit 1, what are at least five traits in Frankenstein that make it gothic?

How did Chargaff's results show that Levene's model was wrong?

Solve the system of equations 6+4y=12 2x+3y=6