Respuesta :

nekobaby76
[2(x+10)] =
well we have to add first 
x=1 + 10= 11 since there is parenthesis around the "11" it is times 11 x 2 = 22
 
we will just have to times this and put a - in front of the 90 (3x - 30) = -90 

Hope I could help out.