Question

21 va rog
Dau coroana și multumesc

Answer 1

a)  3(2x - 1) =141⇒6x - 3 =141⇒6x = 141 + 3⇒6x = 144⇒x = 24

b) 8x+ 10 = 6x +18⇒8x - 6x =18 - 10⇒2x = 8⇒x=8:2       ⇒x = 4

c) 29 - 5(x + 1) = 4⇒29 - 5x - 5 = 4⇒24 - 4 = 5x⇒20 = 5x ⇒x = 20:5⇒ x = 4

d) 2(3x - 1 ) = 3 (x +2 )+ 4⇒6x - 2 = 3x + 6 + 4⇒6x - 3x = 10 + 2⇒3x = 12 ⇒x=12 : 3⇒x =  4

e) [37 - (x - 1) × 3] × 2 =14⇒[37 - (3x - 3)]× 2 = 14⇒(37 - 3x + 3)× 2 = 14⇒(40 - 3x) × 2 = 14⇒80 - 6x = 14⇒ 80 -14 = 6x