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Mathematics 19 Online
OpenStudy (anonymous):

-8x+9x-21=-12-16

OpenStudy (lynfran):

hi!!

OpenStudy (anonymous):

can you help plz

OpenStudy (lynfran):

ok sure we need to solve for the variable "x".. so we can start by simplifying

OpenStudy (lynfran):

whats -8x+9x =?? whats -12-16=??

OpenStudy (anonymous):

1x and -28

OpenStudy (lynfran):

so when simply we have x-21=-28

OpenStudy (lynfran):

now we can add 21 to both sides of the equation

OpenStudy (lynfran):

we get x-21+21=-28+21

OpenStudy (anonymous):

x=-7 right

OpenStudy (lynfran):

correct

OpenStudy (anonymous):

ty so much i will fan and medal

OpenStudy (lynfran):

welcome

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