Question

Помогите с заданием 1278.

Answer 1

Ответ:

4x+9y-9=0

5x-6y-17=0

x=-9/4y+9/4

5x-6y-17=0

5(-9/4y+9/4)-6y-17=0

y=-1/3

x=-/4*(-1/3)+9/4

x=3

y=-1/3

1,5x-1,2y+18=0

0,7x-1,8y+14,6=0

x=2y/25-6/5

0.7x-1.8y+14.6=0

0.7(2y/25-6/5)-1.8y+14.6=0

y=860/109

x=2*860/109 /25-6/5

x=-62/109

x=-62/100

y=860/109