How do you combine like terms in #9y + ( - 2x ) - 4x + 1- 4y + 6#?

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Answer 1 · 2017-02-24T14:28:24

#5y-6x+7#

#9y+(-2x)-4x+1-4y+6#

Open the brackets. The product of a positive and a negative is a negative.

#9y-2x-4x+1-4y+6#

Group like terms with their preceding signs.

#9y-4y-2x-4x+1+6#

Group the like terms in brackets, separating the brackets with a #+# sign so as to retain the preceding signs for each term.

#(9y-4y)+(-2x-4x)+(1+6)#

Simplify the terms within each set of brackets.

#(5y)+(-6x)+(7)#

Open the brackets. The product of a negative and a positive is a negative.

#5y-6x+7#