TALLER

1)

x=precio libra de cafe
y= " azucar

6x+5y=227 (-5)
-5x+4y=188 (6)

-30x+25y=1135
30x-24y=1128
---------------------
/ y=7

y=7

5X+4(7)=188
5x+28=188
5x=188-28
5x=160 x=160/5

x=32

2)

x=traje
y=sombrero

5x+3y=4180 (8)
8x+9y=6490 (-5)

40x+9y=33440
-40x+45y=34700
--------------------
/ -21y =-1260
y=-1260/21

8x+9(60)=6940
8x+540=6940
8x=6940-540
8x6400
8x6460/8
x=800

3)

x=vacas
y=caballos

4x+7y=514 (8)
8x+9y=818 (-4)

32x+63y=4626
-56x+63y=5726
-----------------------
-20- / =1100

x=110/20

X=55

8x(55)+9y=818
8x+9y=818
9y=818=440
9y=378

y=378/9

y=402




4)

x=adultos
y=niños

10x+9y=512 (15)
15x+17y=831 (-10)

150x+135y=7620
-150x+170y=8310
---------------------
- / +112= 1310

x=1310

150(1310)+170y=831
150+170y=831
170y=831-170
170y= 741
170y=741/9

Y= 802


5)

x=la suma
Y=la diferencia

x+y=1529 (1)
x+y=101 (-2)

x+y=1529
-x+y=101
----------------
- / 1428

x=1428

x(1428)+y=101
x+y=101Y=101/y

y=101.