e)
\left \{ {{\frac{2x+y}{5}-3=\frac{3x-5y}{2} \ |*10} \atop {22x-19y=10 }} \right
\left \{ {{2(2x+y)-30=5(3x-5y)} \atop {22x-19y=10 }} \right
\left \{ {{4x+2y-30=15x-25y} \atop {22x-19y=10 }} \right
\left \{ {{-11x+27y=30 \ |*2} \atop {22x-19y=10 }} \right
\left \{ {{-22x+54y=60} \atop {22x-19y=10 }} \right
dodaję stronami:
35y=70\ |:35
y=2
podstawiam:
22x-19y=10
22x-19*2=10 \ |:2
11x-19=5
11x=24 \ |:11
x=\frac{24}{11}
x=2\frac{2}{11}
\left \{ {{x=2\frac{2}{11}} \atop {y=2}} \right