Question

f < A and < B are complementary, and < A = 3x + 4 degrees, while < B = 6x - 4 degrees, find x.

Answer 1

Answer: 10

Explanation:

3x+4+6x-4=90

9x=90

x=10

Answer 2

x = 8/3 or 2 2/3

Explanation:

if angles A and B are complementary then their sum is 90 degrees

we can write the following equation to find 'x':

3x + 4 = 6x - 4

subtract '3x' from each side:

4 = 3x - 4

add 4 to each side:

8 = 3x

divide each side by 3:

8/3 = x

or x = 2 2/3