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Mathematics 21 Online
OpenStudy (anonymous):

Evaluate 2x − y when x = 3 and y = −2

mathslover (mathslover):

ok so can u tell me what is : 2(3)-(-2) ?

mathslover (mathslover):

will this look better to u : \[\large{2(3)-(-2)}\]

OpenStudy (anonymous):

ahhh no ?? :(

mathslover (mathslover):

ok no problem just tell me what is 2(3) ?

mathslover (mathslover):

2*3 = ?

OpenStudy (anonymous):

6

mathslover (mathslover):

very good now tell me what is 1 * (-2)

OpenStudy (anonymous):

-2 ?

mathslover (mathslover):

gr8 .. now given 2(3)-(-2)= \(\large{2*3 - (1*(-2))}\) hence this will be 6 - (-2)

mathslover (mathslover):

now can u tell me wht is 6 - (-2) ?

OpenStudy (anonymous):

8

mathslover (mathslover):

gr8 so this is ur answer

mathslover (mathslover):

congrats @malcria16 u did it by urself

mathslover (mathslover):

Just remember whenever it seems lenthy or hard : go through breaking an expression into terms... solve the terms and then re unite them

OpenStudy (anonymous):

thanks (:

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