35a+40-5a=10 a-20+20
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35a+40-5a=10 a-20+20
35a+5a-40=10a-20+20
40a-40=10-0..
40a=40+10-0
40a=50
a=50upon40
a=4upon5
Answered by
0
35a+40-5a=10 a-20+20
35a+5a-40=10a-20+20
40a-40=10-0..
40a=40+10-0
40a=50
a=50upon40
a=4upon5
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