Question

1. 4x - 5 ( for x is 4 )

2. 2a + 5 ( for a is 3 )
3. 6(n-5) + 3 ( for n is 9 )
4. 2( 3y - 2) for y is 2

Answer 1

1. 11.
2. 11
3. 27
4. 8

Answer 2

11

12

24

16

substitute variable for the number and solve