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frez [133]
3 years ago
8

THIS IS URGENT I NEED HELP ASAP PLEASE

Mathematics
1 answer:
enyata [817]3 years ago
4 0
So you can only simplify like terms this means that number terms like 5 can’t be added or subtracted from 5x and the x is a separate term this is the same for x^2 and so on as these are different terms and can’t be added or subtracted to other terms, next the signs in between the brackets may change whether you add or subtract so be careful with those a negative and a positive make a negative, two positives make a positive, two negatives make a positive, always check the signs when answering so
No20) (2a+9)-(4a-9) would be 2a+9-4a+9 as the minus changes the signs this then equals -2a+18
Now you can do the harder ones
19) (5a^2+7a-1)+(3a^3-4a+6) =
3a^2+5a^2+3a+5
21) (3x^3+3x^2-4x+5)-(x^3-2x^2+x-4) = 2x^3+5x^2-5x+9
22) (2x^3-5x+1)+(4-6x+x^2) = 2x^3+x^2-11x+5
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(15a^4 - 30a^5 )/5a^2

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The sum of 3 numbers is -44.84.one of these numbers is 24.6.the other 2 numbers are equal to each number.what is the value of ea
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2 years ago
-3z+8=2z-12 what is the answer?
Gre4nikov [31]

Answer:

Step-by-step explanation:

Simplifying

-3a + 8 = 2z + -12

Reorder the terms:

8 + -3a = 2z + -12

Reorder the terms:

8 + -3a = -12 + 2z

Solving

8 + -3a = -12 + 2z

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-8' to each side of the equation.

8 + -8 + -3a = -12 + -8 + 2z

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Divide each side by '-3'.

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