1.
(6y+15)(2,4-0,8y)=0
14,4y-4,8y+36-12y=0
-2,4y = -36
y=36/2.4 =15
2.
12x-(5x-8)=8+7x
12x-5x+8 = 8+7x
0x =0
x ∈ R
1.
(6y+15)(2,4-0,8y)=0
14,4y-4,8y+36-12y=0
-2,4y = -36
y=36/2.4 =15
2.
12x-(5x-8)=8+7x
12x-5x+8 = 8+7x
0x =0
x ∈ R