yessy2004
yessy2004
02-11-2019
Mathematics
contestada
3(x+y)=7(y-x), 5(3x-y)=x+3
Respuesta :
dsabbide
dsabbide
02-11-2019
Answer:
i am not sure thi sis the first one
Answer Link
juju739
juju739
02-11-2019
3(x+y) = 7(y-x)
3x+3y = 7y-7x
3x+7x +3y -7y = 0
10x - 5y = 0 —> *7
70x-35y = 0
5(3x-y)=x+3
15x-y =x+3
15x-x-y = 3
14x -y = 3 —>*5
70x-5y =15
70x-70x-5y-(-35y) = 15
30y = 15
y = 1/2
-2.5 +10x = 0
10x = 2.5
x = 0.25
Answer Link
VER TODAS LAS RESPUESTAS ( 71+ )
Otras preguntas
The Great Vowel Shift was primarily a change in _____. semantics syntax phonetics
what is 9.045 rounded to the nearest hundredths
All Englishmen of the nineteenth century agreed that the Industrial Revolution produced no ill effects. a. True b. False
How have waterways most influenced human settlement in South Asia? A. Most People live along the coast of the Arabian Sea and Indian Ocean to better conduct tr
what is the gcf of 14a and 28ab.
identify the type of figurative language in the sentence below: Paris: "Poor soul, thy face is much abus'd with tears." Juliet: "The tears have got small vict
2 quarters, 1 dime, 2 nickles, and 3 pennies ...what fraction of the coins were either nickles or pennies?
14 subtracted from 5 times a number is 6
The three major types of faults are normal, reverse and syncline.
what situation below is subjunctive ? A) we should go to the lake if we don't have to do chores B) we'll go to the lake after chores C) if we go to Lake, we hav
