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Mathematics 11 Online
OpenStudy (anonymous):

can someone help with with system of equations????

OpenStudy (anonymous):

solve each system by substitution 3x - 4y =-5 -x + 2y=3

OpenStudy (anonymous):

whats the question? @cookiimonster27

OpenStudy (anonymous):

one sec

OpenStudy (anonymous):

k

OpenStudy (anonymous):

these are 2 equations right?

OpenStudy (anonymous):

yes

OpenStudy (anonymous):

ok got it one sec :P

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

ok so you need to solve for x

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

3x - 4y = -5 <- your solving this now you need to add 4y to both sides 3x - 4y + 4y = -5 + 4y

OpenStudy (anonymous):

3x = 4y - 5 now divide both sides by 3 3x/3 = 4y-5/3 x = 4/3y + -5/3

OpenStudy (anonymous):

x = 4/3 y + -5/3 <- your answer!

OpenStudy (anonymous):

could you help with another @cutelilcigarette

OpenStudy (anonymous):

sure

OpenStudy (anonymous):

solve each system by linear combination -x + 4y = -1 2x - y = 5.5

OpenStudy (anonymous):

ok so your solving for X for both of these equations

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

solving for x -> -x + 4y = -1 add -4y to both sides -x + 4y + -4y = -1 + -4y -x = -4y - 1 now divide both sides by -1 -x/-1 = -4y-1/-1 your answer will be x = 4y + 1

OpenStudy (anonymous):

thats for the first equation

OpenStudy (anonymous):

is that using linear combination?

OpenStudy (anonymous):

yes because your solving for x @cookiimonster27 these are equations

OpenStudy (anonymous):

for question 2 now your solving x for 2x - y = 5.5 you need to add y to both sides 2x - y + y = 5.5 + y 2x = y + 5.5 now divide both sides by 2 2x/2 = y+5.5/2 and your answer comes out to x = 1/2 y + 2.75

OpenStudy (anonymous):

ok i was just wondering

OpenStudy (anonymous):

Thank you

OpenStudy (anonymous):

welcome!

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