An algebra problem by Pandu Christian

Algebra Level 1

523x + 452y = 67

477x +548y = 76

x + y = ...


The answer is 0.143.

Pandu Christian by Pandu Christian , 26, Indonesia

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2 solutions

Ronald Manuel
Aug 14, 2015

523x + 452y + 477x+ 548y = 67 +76 1000x + 1000y = 143 Divide both sides by 1000. Therefore: x+y = 0.143

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Nikhil Raj
May 30, 2017

Given , 523 x + 452 y = 67 … ( 1 ) 477 x + 548 y = 76 … ( 2 ) \begin{aligned} 523x + 452y = 67 \ldots (1) \\ 477x + 548y = 76 \ldots (2) \end{aligned} . Adding ( 1 ) (1) and ( 2 ) (2) , we get 1000 x + 1000 y = 143 x + y = 0.143 \begin{aligned} 1000x +1000y = 143 \\ x + y = \boxed{0.143} \end{aligned}

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