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OpenStudy (anonymous):
Simplify the expression: -2 (6a) - (-3) (-7a)
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OpenStudy (rob1525):
Just multiply everything out. so -2*6a is -12a and -1*(-3) is what?
OpenStudy (anonymous):
Sooo -12a*3?
OpenStudy (rob1525):
I was just trying to get to the law of multiplying two negative equals a positive. so (-3)*(-7a) is positive 21a.
OpenStudy (anonymous):
Oh! But the choices are 19a, 33a^2, and -33a
OpenStudy (rob1525):
right so -12a-21a is...
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OpenStudy (anonymous):
Oooohhhh!! pellet dude, derp :P -33a right?
hartnn (hartnn):
yes, -33a
OpenStudy (anonymous):
Ahaha omg I love you guys:P Thankss! Promise I'm not stupid, it's early over here soo
hartnn (hartnn):
no problem :)
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