Question

Ex 1
Va rog
Dau coroana ​

Answer 1

Răspuns:

a) 4(x+2) -3(x-1)= 12

4x +8 - 3x+3 =12

x+8+3=12

x+11=12

x=12-11

x=1

b) 4(x+2) -3(x- a) =12

4x + 8 -3a +3a =12

x+8+3a=12

3a= 12-x-8

3a = 4-x

a=4/3 - 1/3 x