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Mathematics 7 Online
OpenStudy (anonymous):

HELP ILL MEDAL AND FAN YOU !

OpenStudy (anonymous):

What is the solution to the equation?

OpenStudy (solomonzelman):

\(\normalsize\color{royalblue}{ \rm -18+4+x=9-19 }\) this?

OpenStudy (solomonzelman):

\(\large\color{blue}{ -18+4+x=9-19 }\) simplify, the left and right sides, first, can you do that?

OpenStudy (anonymous):

yes (:

OpenStudy (solomonzelman):

ok, can you simplify the right and left sides?

OpenStudy (solomonzelman):

Okay, answer 2 things for me: \(\large\color{blue}{ -18+4=? }\) \(\large\color{blue}{ 9-19 =? }\)

OpenStudy (anonymous):

dont you switch the signs ?

OpenStudy (solomonzelman):

no, no "switching signs" just answer 2 questions I posted just now

OpenStudy (anonymous):

-14 & -10

OpenStudy (solomonzelman):

yes, so instead of having: \(\large\color{blue}{ -18+4+x=9-19 }\) you now have: \(\large\color{blue}{ -14+x=-10 }\)

OpenStudy (solomonzelman):

See what I did?

OpenStudy (solomonzelman):

(after this, add \(\large\color{blue}{ 14 }\) to both sides)

OpenStudy (phebe):

answer is: x-14 = -10 but @SolomonZelman got it

OpenStudy (anonymous):

yes you took out the variable then you sloved both sides then you put the variable back into the equation

OpenStudy (solomonzelman):

no, you are confusing something a bit overhere.... all I did is that I added/subtracted like terms on both sides:

OpenStudy (solomonzelman):

\(\large\color{blue}{ -18+4+x=9-19 }\) became, \(\large\color{blue}{ -14+x=-10 }\) then I am adding \(\large\color{red}{ 14 }\) to both sides. \(\large\color{blue}{ -14+x\color{red}{+14}=-10\color{red}{+14} }\)

OpenStudy (solomonzelman):

can you tell me what \(\large\color{blue}{ x }\) will be equal to?

OpenStudy (anonymous):

so the answer is 4 ?

OpenStudy (solomonzelman):

yes. \(\large\color{blue}{ x=4 }\)

OpenStudy (solomonzelman):

well done.... yw!

OpenStudy (anonymous):

THANK YOU!

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