Haleyy_Bugg
Simplify the following expression.
7x  4y + 5z  2x  10y + z
A) 5x  14y + 6z
B) 9x  14y + 6z
C) 5x  6y + 6z
D) 9x  6y + 6z



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Haleyy_Bugg
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@MATTW20

MATTW20
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just combine like terms. meaning combine all the ones that have the same letter

Haleyy_Bugg
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do you add to combine?

MATTW20
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yes but make sure you take the sign of each into account for example in this problem it's 4y+(10y)

Haleyy_Bugg
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soooooooo 14?

MATTW20
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well for that part it would be 14y can't forget about the sign or the y. but what about the rest

Haleyy_Bugg
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So B?

MATTW20
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and how did you arrive at that answer?

Haleyy_Bugg
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I added the like terms together

MATTW20
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but 7+(2) doesn't equal 9 does it?

Haleyy_Bugg
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no it is 5

MATTW20
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and therefore b doesn't make sense does it. So what would the correct answer be

Haleyy_Bugg
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A?

MATTW20
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Well say it like you mean it don't question mark it :) A!!!! correct btw