EG1) 6< 4x + 2 <26
First you hid up the last part of the equation. Cover up <26 and work out the rest of the equation.
6 < 4x + 2
-2 -2
4 < 4x
1 < x
Now hid up the first part of the equation. Cover up 6< and work out the rest of the equation.
4x + 2 < 26
-2 -2
4x < 24
x< 6
The answer : 1 < x < 6
Questions
1. 4 < 7x - 10 < 32
2. 46 < 9x - 8 < 82
3. x + 8 < 3x +4 < 2x + 11
First you hid up the last part of the equation. Cover up <26 and work out the rest of the equation.
6 < 4x + 2
-2 -2
4 < 4x
1 < x
Now hid up the first part of the equation. Cover up 6< and work out the rest of the equation.
4x + 2 < 26
-2 -2
4x < 24
x< 6
The answer : 1 < x < 6
Questions
1. 4 < 7x - 10 < 32
2. 46 < 9x - 8 < 82
3. x + 8 < 3x +4 < 2x + 11