Question

1. 7x + 2(8-x) = 51 2.(1/9)(0-x) + 2 = 19/9
3. (4/3)(x+6) - x= 8 4.(1+x)/3 = 2
5. x(3+1) -5x = 9

Answer 1

1. 7x + 2(8-x)= 51
7x + 16-2x =51
7x - 2x = 51-16
5x = 35
x = 7

2. (1/9)(0-x) + 2 = 19/9
(times 9 throughout)
0-x +18 = 19
-x = 19-18
-x= 1
x = -1

3. (4/3)(x+6) - x= 8
(multiply 3 throughout)
4x + 24 - 3x = 24
x = 0

4. (1+x)/3 = 2
1+x = 6
x = 5

5. x(3+1) -5x = 9
3x+x - 5x = 9
-x = 9
x= -9