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Linear Algebra 15 Online
OpenStudy (anonymous):

What is the solution to the equation?

OpenStudy (anonymous):

OpenStudy (anonymous):

did you still need help? @leothelion

OpenStudy (anonymous):

yeah

OpenStudy (anonymous):

alright so first we want to combine like terms... could you do that?

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

so we start with 32-6x+7x=-5+28 so sum up the coefficients on the sum and then sum up the right

OpenStudy (anonymous):

so we get 32+x=23

OpenStudy (anonymous):

32-13x=13

OpenStudy (anonymous):

its -15

OpenStudy (anonymous):

not - 5

OpenStudy (anonymous):

nice try but no when you add a negative to a positive you subtract

OpenStudy (anonymous):

but my bad i wrote it down wrong haha restart!!

OpenStudy (anonymous):

so i was right i did subtract

OpenStudy (anonymous):

15 - 38 is 13

OpenStudy (anonymous):

28

OpenStudy (anonymous):

so we start at: 32-6x+7x=-15+28 add the two variables: so in a simple form we have: 7x-6x=1x or x so our equation is: 32+x=-15+28 follow?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

ok i c what i did i was adding like terms but it was coefficients

OpenStudy (anonymous):

okay so we then simplify the right side of the equation: 32+x=-15+28 subtract: 28-15=13 so then we go back to our equation: 32+x=13 subtract 32 from both sides: 32-32+x=13-32 give it a try...

OpenStudy (anonymous):

0+x=19

OpenStudy (anonymous):

yes but what you have to take into consideration is the positive or negative aspect of the coefficient ......... and close :) it would be -19 so x=-19

OpenStudy (anonymous):

ok thx

OpenStudy (anonymous):

no problem ...

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