Answer: 7
Step-by-step explanation:
Step 1: Subtract 3 from both sides.
6a+3−3=45−3
6a=42
Step 2: Divide both sides by 6.
6a
/6
=
42
/6
3x+2(5x-3)=7
3x+10x-6=7
13x-6=7
13x=13
x=1
Answer: x=4
10x-3x=30-2
7x=28
X=4
Answer:

Step-by-step explanation:

We can try to simplify first.

Now we can combine the like terms:

hope this helped! :)
Answer:
D) gallery: g
balcony: 2g
main floor: 2g + 225
Step-by-step explanation: