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Delvig [45]
3 years ago
9

Can someone help me on number one plz. Help me by explaining the steps ;D

Mathematics
2 answers:
SVETLANKA909090 [29]3 years ago
5 0
It's easy since all the variables have a after them they can be added and subtracted together.

15a-9a=6a
6a+20a=26a
26a-12a=14a
The simplest form is 14a <span />
harina [27]3 years ago
3 0
0+1=1 
1-0=1
1x1=1
1/1=1
1 is in everything if this didnt help tell me
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