Question

ex 1 sub 2 de la test 3 va rog dau coroana
(Cel încercuit)

Answer 1

5-x = 2(x-5a)+a+2

2(3x-2a)+13 =5(x+3)

=>

5-x = 2x-10a+a+2

6x-4a+13 = 5x+15

=>

-3x = -9a-3 |:(-3)

x = 4a+2

=>

x = 3a+1

x = 4a+2

=> 3a+1 = 4a+2 => 4a-3a = 1-2 => a = -1

Answer 2

5-x=2(x-5a)+a+2

5-x=2x-10a+a+2

2x+x=10a-a+5-2

3x=9a+3 |:3

x=3a+1

2(3x-2a)+13=5(x+3)

6x-4a+13=5x+15

6x-5x=4a+15-13

x=4a+2

3a+1=4a+2

4a-3a=1-2

a=-1