3.5(2.25+x)=14
Step 1: Simplify both sides of the equation.
3.5(2.25+x)=14
(3.5)(2.25)+(3.5)(x)=14(Distribute)
7.875+3.5x=14
3.5x+7.875=14
Step 2: Subtract 7.875 from both sides.
3.5x+7.875−7.875=14−7.875
3.5x=6.125
Step 3: Divide both sides by 3.5.
3.5x/3.5=6.125/3.5
x=1.75