Question

exercitiu 1 punctele e. f. g. multumesc dau coroana

Answer 1

e) -x=2
x=-2

f) 4x= -8
x= -2

Answer 2

e) 18:(-x) = 9 ⇔ 18/(-x) = 9 |:9 ⇔ 2/(-x) = 1 ⇔ -x = 2 |·(-1) ⇒ x = -2

f) 5x = x-8⇔ 5x-x = -8 ⇔ 4x = -8 ⇔ x = -2

g) 3(x - 1) = 9  |:3 ⇔ x - 1 = 3 ⇔ x = 4.