The missing value of x in the width of the rectangle will be 7 units.
What is the area of the Rectangle?
The formula for area of a rectangle is;
A = L * W
Where;
L is length of Rectangle
W is width of Rectangle
Now we see that;
Length of Rectangle = 7 units
Width of Rectangle = 3x - 2 units
Area of Rectangle = 133 square units
Thus, using the formula for area of rectangle gives us;
133 = 7(3x - 2)
Multiplying out the bracket gives;
133 = 21x - 14
Add 14 to both sides to get;
133 + 14 = 21x
21x = 147
x = 147/21
x = 7 units
Hence, the missing value of x in the width of the rectangle will be 7 units.
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