4X-Y=704Y-X=50Qual o valor de X e Y? eQual o valor de X-Y?me ajudem pf. Created by Marcony Gomes. ciencias-e-matematica-en - matematica-en

{ 4x - y = 70{ x - 4y = - 50--------------------- (+)4x - 4y + x - y = 204(x - y) + 1(x - y) = 205(x - y) = 20 --> x - y = 4 >>{x - y = 4{4y - x = 50-----------------( +)3y = 54 --> y = 18x - 18 = 4 ---> x = 22Recapitulando: x - y = 4......x = 22.....y = 1800sombraLv 78 years ago4X-Y=704Y-X=504X-Y=70..............(1)-4X+16Y=200.......(2)(1)+(2)-Y+16Y=70+20015Y=270Y=184X-Y=704X-18=704X=70+184X=88X=22X-Y=22-18=4Resposta:X=22Y=18X-Y=400Louis XVLv 78 years ago4x - y = 70 4y - x = 50 x = 4y - 50 16y - 200 - y = 70 15y = 270 y = 270/15 = 18 x = 4y - 50 x = 72 - 50 = 22 x - y = 22 - 18 = 4 pronto00Still have questions? Get your answers by asking now.Ask QuestionTrending QuestionsTrending QuestionsConvert the whole number to a percent: 58?19 answersThe sum of three consecutive integers is 36. What is the largest of the three integers? The correct answer is 13.?11 answersHelp with this math question?8 answersHow do you solve this math word problem? PLEASE HELP ME AND EXPLAIN STEP BY STEP!!!?9 answersAm I right?6 answersAnswer QuestionsAnswer QuestionsAlgebra help please?What's the square root of -1?Is this the last question?Let L1 and L2 be the lines whose parametric equations are?Using the Routh-Hurwitz stability criterion, determine the range of values of 𝐾 for the stabilide?Terms・Privacy・AdChoices・RSS・HelpAbout Answers・Community Guidelines・Leaderboard・Knowledge Partners・Points & LevelsSend Feedback・International Sites

Resolva o sistema de Equações abaixo...?

Marcony Gomes @Marcony Gomes

May 2021 1 103 Report

Resolva o sistema de Equações abaixo...?

4X-Y=70

4Y-X=50

Qual o valor de X e Y?

Qual o valor de X-Y?

me ajudem pf

Ciências e Matemática / Matemática

Answers & Comments

Morphling

Verified answer

{ 4x - y = 70

{ x - 4y = - 50

--------------------- (+)

4x - 4y + x - y = 20

4(x - y) + 1(x - y) = 20

5(x - y) = 20 --> x - y = 4 >>

{x - y = 4

{4y - x = 50

-----------------( +)

3y = 54 --> y = 18

x - 18 = 4 ---> x = 22

Recapitulando: x - y = 4......x = 22.....y = 18

sombra

Lv 7

8 years ago

4X-Y=70

4Y-X=50

4X-Y=70..............(1)

-4X+16Y=200.......(2)

(1)+(2)

-Y+16Y=70+200

15Y=270

Y=18

4X-Y=70

4X-18=70

4X=70+18

4X=88

X=22

X-Y=

22-18=

Resposta:

X=22

Y=18

X-Y=4

Louis XV

Lv 7

8 years ago

4x - y = 70

4y - x = 50

x = 4y - 50

16y - 200 - y = 70

15y = 270

y = 270/15 = 18

x = 4y - 50

x = 72 - 50 = 22

x - y = 22 - 18 = 4

pronto

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Answers & Comments

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