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