Rozwiąż układ równań dwoma metodami: [latex] left { {{10=a-6b} atop {9=a-6 frac{1}{4}b }} ight. [/latex]

[latex]\ left { {{a-6b=10} atop {a-6 frac{1}{4}b=9/cdot(-1) }} ight. \ \left { {{a-6b=10} atop {-a+6 frac{1}{4}b=-9 }} ight. \------- + \ frac{1}{4} b=1 \ \b=4 \ \a-6cdot4=10 \ \a=10+24=34 \ \--------- \ \left { {{a-6b=10impliesa=10+6b} atop {a-6 frac{1}{4}b=9 }} ight. \ \10+6b-6 frac{1}{4} b=9 \ \- frac{1}{4} b=9-10/cdot(-4) \ \b=4 \ \a=10+6cdot4=34[/latex]