Question

a) 5x + 11 = 66;
d) x.(-7)= 14;
g) 5x = -30;
j) 12x = -8 + 4x;​

Answer 1

Răspuns:

5x + 11 = 66

5x = 66 - 11

5x = 55

x = 11

- 7x = 14

7x = - 14

x = - 2

5x = - 30

x = - 6

12x = - 8 + 4x

12x - 4x = - 8

8x = - 8

x = - 1

Answer 2

A) x= 66:5 x=13.2

B) x =14÷-7 x= -2

G) x= - 30 : 5 = -6

J) 12x= -4 x= 4 : -12 =-0.(3)