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# Simplify 3x-9d+7c+5d?

-9d + 5d = -4d =3x - 4d + 7c

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240 students helped

It can be useful to think of each letter as a different object. Let's say X = bananas and y = apples If we need to simplify 2x + 4y - 5x, we can't add the X and y values together because they are different things. If we have 2 apples, 4 bananas and -5 apples then we can't just add it all up, we have to count each object separately. So the answer would be 4y - 3x

Rachel Dark
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276 students helped

Separate this up and collect the like terms So X terms : 3x D terms : -9d. +5d C terms : 7c Then simplify these (take note that negative values are taken into consideration) So we have 3x -9d+5d= -4d 7c Then add these back together to get 3x-4d+7c

Lauren Holland
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2.3k students helped

3x-4d+7c

Annie James
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164 students helped

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