Sam Z. answered 09/20/19
Tutor
4.3
(12)
Math/Science Tutor
a+2b=771
2a+b=780
3a+3b=1551
a+b=517
(517-b)+2b=771
b=254
a=263
Sam Z. answered 09/20/19
Math/Science Tutor
a+2b=771
2a+b=780
3a+3b=1551
a+b=517
(517-b)+2b=771
b=254
a=263
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