1) Step 1: Subtract 3 from both sides.
6x+3−3=18−3
6x=15
Step 2: Divide both sides by 6.
6x/6 = 15/6
when simplified its 5/2
Answer: 5/2
2) Step 1: Simplify both sides of the equation.
5(4x−5)=155
(5)(4x)+(5)(−5)=155(Distribute)
20x+−25=155
20x−25=155
Step 2: Add 25 to both sides.
20x−25+25=155+25
20x=180
Step 3: Divide both sides by 20.
20x/20= 180/20
when simplified its x = 9
Answer: x = 9