1.2х-1=5(х+10)
2x – 1 = 5x + 50
2x – 5x = 50 + 1
-3x = 51
x = -17
2.(х-5)(9+х)=0
(1x-5) = 0
1x = 5
x1 = 5
(9+1x) = 0
+1x = -9
x2 = -9
1.2х-1=5(х+10)
2x – 1 = 5x + 50
2x – 5x = 50 + 1
-3x = 51
x = -17
2.(х-5)(9+х)=0
(1x-5) = 0
1x = 5
x1 = 5
(9+1x) = 0
+1x = -9
x2 = -9