Solving Equations with Brackets

Question 1:

33x+46x=42
x =10

Question 2:

1= 43x79x
x =9

Question 3:

42x+78x=28
x =11

Question 4:

104= 43x+104x
x =8

Question 5:

5x35x=15
x =11

Question 6:

34x+35x=51
x =6