IF 17a + 23b = 40 AND 23a + 17b = 80 , THEN a + b = ...................
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Answered by
1
Step-by-step explanation:
17a+23b=40
23a+17b=80
40a+40b=120
(dividing equation by 40)
a+b=3
Answered by
0
17a +23b= 40 _______(i)
23a+ 17b= 80________(ii)
i + ii
40a +40b =120
40(a+b)=120
a+b=120/40
a+b= 3
23a+ 17b= 80________(ii)
i + ii
40a +40b =120
40(a+b)=120
a+b=120/40
a+b= 3
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