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stich3 [128]
2 years ago
12

Help pls!

TexFormula1" title="\begin{bmatrix}5x+3y=7\\ 3x-5y=-23\end{bmatrix}" alt="\begin{bmatrix}5x+3y=7\\ 3x-5y=-23\end{bmatrix}" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
saw5 [17]2 years ago
3 0

Answer:

Soln:

5x+3y=7

(5x+3y)×5=7×5

25x+15y=35,eq.1

3x-5y=(-23)

(3x-5y)×3=-23×3

9x-15y=(-69)

Adding both equations,

25x+15y=35

9x-15y=(-69)

34x=(-34)

x=(-1)

5x+3y=7

(-5)+3y=7

3y=12

y=4

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