Answer:
x = 8
Step-by-step explanation:
The two angles are complementary angles, which means they add to 90 degrees
6x + (4x+10) = 90
Combine like terms
10x+10 = 90
Subtract 10 from each side
10x+10-10=90-10
10x = 80
Divide each side by 10
10x/10=80/10
x = 8