Since the angles are supplementary, their sum is 180 degrees.
So, we have:
128 + 5x = 180
Subtracting 128 from both sides, we get:
5x = 52
Dividing by 5, we get:
x = 10.4
Therefore, the value of x is 10.4.
consider the diagram of supplementary angles
One side is 128 dgerees
The other is 5x
whats the value of x
1 answer
1 answer