Solve for x and y using elimination method:
ax + by -a + b = 0, bx - ay -a - b = 0.
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Step-by-step explanation:
abx + b²y - ax+ b²=0
abx -a²y -a²-ab
abx - ab + b²y +b² -( abx-a²y - a²- ab) =0
( abx - abx ) + y ( a² + b²) + 1( a²+ b²) + ( ab -ab)=0
(0) +(y+1) (a²+b²) =0
y+1 = 0 ÷ (a²+b²)
y+1=0
y=1
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