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monitta
2 years ago
11

Pls answer correctly thnks

Mathematics
2 answers:
hammer [34]2 years ago
5 0

-5x+3y = 10~~~~ .....(i)\\\\2x+5y =-35~~~ ....(ii)\\\\\text{Multiply equation (ii) by}~ \dfrac 35~ \text{ and do  (ii) -(i)}\\\\\\\dfrac 35(2x+5y) - (-5x+3y) = \dfrac 35}(-35) - 10\\\\\implies \dfrac{6x}5 +3y + 5x -3y = -21-10  = -31\\\\\implies \dfrac{6x + 25x}5  = -31\\\\\implies 31x = -31 \times 5\\\\\implies x = -5\\\\\text{Substitute }~x=-5~ \text{in equation (ii):}\\\\2(-5) +5y =-35\\\\\implies -10 +5y = -35\\\\\implies 5y = -35 +10 = -25\\\\\implies y = - \dfrac{25}5 = -5

\text{Hence,}~ \textbf{(x,y) = (-5, -5)}

ruslelena [56]2 years ago
4 0
Ok done. Thank to me:>

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