Answer:
Q19 - x = 7
Q20 - x = 24
Explanation:
Q19.
75 + x + 8 = 90°
83 + x = 90°
x = 90 - 83
x = 7
{CHECK: 75 + 7 + 8 = 90°}
Q20.
3x - 6 + x = 90°
4x - 6 = 90°
4x = 96
x = 96 / 4
x = 24
{CHECK: 3(24) - 6 + 24 = 90°}
hope this helps...
have a great day ahead ;)