Question

2x-3= -9
2x-10= -2
2x -18= -20

Answer 1

2x-3= -9
2x = -9+3
2x=-6
x=-3

2x-10= -2
2x=-2+10
2x=8
x=4

2x -18= -20
2x=-20+18
2x=-2
x=-1

Answer 2

a)  2x= -9+3

2x= -6   ⇒  x= -6/2= - 3

b) 2x= - 2+10

2x= 8   ⇒  x=8/2= 4

c) 2x= - 20+18

2x= -2   ⇒  x= -2/2 = - 1

Sper că te-am ajutat!