A+A= 80
B+B=40 C+C=4 A+B÷C=?
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A+ A = 80
2A = 80
A = 40
B+ B= 40
2B = 40
B= 20
C+C= 4
2C= 4
C= 2
40+20÷2
= 40+ 10
= 50
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