Answer:
x = 20
Step-by-step explanation:
x° + 2x° + (x+10)° = 90°
3x° + x° + 10° = 90°
4x° + 10° = 90°
4x° = 90°-10°
4x° = 80°
x = 80/4
x = 20
n+6=6nStep-by-step explanation:
A − 3b = 16
a = b − 2
b - 2 - 3b = 16
2b = - 18
b = - 9
a = - 9 - 2
a = - 11
(-11,-9)
Answer:
-27
Step-by-step explanation:
5(x+3) = 4(x-3)
5x + 15 = 4x - 12
5x - 4x = -12 - 15
X = -27