23-11-2016
Mathematics

contestada

find x+y,if12x+13y=29and 13x+12y=21

Respuesta :

23-11-2016

if 12x+13y=29 and 13x+12y=21

you sum up both equations:
(12+13)x+(12+13)y=29+21
25x+25y=50
25(x+y)=50
x+y=50/25
x+y=2

Answer Link

Otras preguntas

The boy was penitent and _______ to the store clerk for stealing candy.a-bragged b-apologizedc-talked d-cordial

How many faces edges vertices does a decagonal prism have ?

what is a prepositional case?

The name of each contestant is written on a separate card, the cards are placed in a bag, and three names are picked from the bag. Identify which type of sampli

what is a closed-ended question?

what is the possessive case?

show by a simple experiment that diffusion becomes faster when temperature is raised

how reliable are grammar checkers?

how can I solve this square of binomial? (5d - 7d^2t)^2?

the one to one functions G and H are defined as followG={(-8,1),(1,5),(4,-5)(8,-9)}H(x)=3x+4find the following g^-1(1)=h^-1(x)=(h^-1oh)(-2)=