Question

rezolvati numai d ela testul 2

Answer 1

Ex. 1

a) 4x = -1+9

x = 8:4

x = 2

b) -2/5x = 2,4 - 1,6

-2/5x = 0,8 = 8/10 = 4/5

-x = 4/5 x 5/2

x = -2

c) V3 + V3x = 4V3

V3x = 4V3 - V3

x = 2V3 : V3

x = 2

Ex. 2

4x-16-6+3x = 3x-2x-10+6

7x-22 = x-4

7x-x = -4+22

6x = 18

x = 18/6

x = 3