Răspuns :
2*{27-2*[3*x-(35:5-2*3)]+3}:4=10
2*{27-2*[3*x-(35:5-2*3)]+3}=40
30-2*(3*x-1)=20
-2*(3*x-1)=20-30
2*(3*x-1)=10
3*x-1=5
3*x=6
x=2
2*{27-2*[3*x-(35:5-2*3)]+3}=40
30-2*(3*x-1)=20
-2*(3*x-1)=20-30
2*(3*x-1)=10
3*x-1=5
3*x=6
x=2
2 • { 27 - 2 • [3 • x - ( 35 : 5 - 2 • 3)] + 3} : 4 =10
2 • { 27 - 2 • [3 • x - ( 7 - 6)] + 3} = 10 x 4
2 • [ 27 - 2 • (3 • x - 1) + 3] = 40
27 - 2 • (3 • x - 1) + 3 = 40 : 2
27 - 2 • (3 • x - 1) + 3 = 20
27 - 2 • (3 • x - 1) = 20 - 3
27 - 2 • (3 • x - 1) = 17
2 • (3 • x - 1) = 27 - 17
2 • (3 • x - 1) = 10
3 • x - 1 = 10 : 2
3 • x - 1 = 5
3 • x = 5 + 1
3 • x = 6
x = 6 : 3
x = 2
2 • { 27 - 2 • [3 • x - ( 7 - 6)] + 3} = 10 x 4
2 • [ 27 - 2 • (3 • x - 1) + 3] = 40
27 - 2 • (3 • x - 1) + 3 = 40 : 2
27 - 2 • (3 • x - 1) + 3 = 20
27 - 2 • (3 • x - 1) = 20 - 3
27 - 2 • (3 • x - 1) = 17
2 • (3 • x - 1) = 27 - 17
2 • (3 • x - 1) = 10
3 • x - 1 = 10 : 2
3 • x - 1 = 5
3 • x = 5 + 1
3 • x = 6
x = 6 : 3
x = 2