Question

b) способом сложения
{8х +13y - 73 = 0
{8x - 12 y +52 = 0​

Answer 1

8х+13у-73=0 |*(-1)
8х-12у+52=0

-8х-13у+73=0
8х-12у+52=0

8х+13у-73=0
-25у = -125

8х+13у-73=0
у=5

8х+65-73=0
у=5

8х=73-65
у=5

8х=8
у=5

х=1
у=5