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BARSIC [14]
2 years ago
15

GCF of 72 and 81 (pls show work 20 pts each)

Mathematics
2 answers:
Ostrovityanka [42]2 years ago
8 0

Answer:

9

Step-by-step explanation:

9x8 is 72

9x9 is 81

9x8

3x3x4x4

3x3x2x2x2x2

9x9

3x3x3x3

Firdavs [7]2 years ago
6 0

Answer:

GCF is 9

Step-by-step explanation:

72 can be broken down into 9 and 8

81 can be broken down into 9 and 9

The GCF is 9

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2 years ago
2z -5(z +2) = -8 - 2z<br><br> Please explain!! Thank you
Korolek [52]

Follow PEMDAS.

You would first do your distributive property which is, -5(z+2). You would multiply -5 to z and -5 to 2 which will give you -5z + -10.

so now you have 2z-5z+ -10= -8 - 2z. Now you must isolate the variable. So subtract -8 to -10 which will give you -18.

Now you have the equation 2z-5z-18=-2z

Now combine like terms. 2z-5z= -3z

Now you have the equation -3z-18=-2z

Now you must move the -3z to the other side of the equal sign by adding the opposite which is +3z to -2z which will give you +1z

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