Answer:
3x+4(3x−5)=25
Use the distributive property to multiply 4 by 3x−5.
3x+12x−20=25
Combine 3x and 12x to get 15x.
15x−20=25
Add 20 to both sides.
15x=25+20
Add 25 and 20 to get 45.
15x=45
Divide both sides by 15.
x= 45/15
Divide 45 by 15 to get 3.
x=3