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3. Check whether 7 + 3x is a factor of 3x3 + 7x.
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How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Which of the following is the result of expanding the series

50 will mark show all use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2x+9y= -26 -3x-7y=13