Answer:
20.30
Step-by-step explanation:
To the nearest tenth =20.30
6x+9x+4-11=21x-7
15x-7=21x-7
15x-21x=0
x=0
see below
x = 63 and y = 27
180 - 117 Gives 63
A: I think it’s 9(−5+9n+10n2)