Solve:2x−(7−5x)9x−(3+4x)=76
2x−(7−5x)9x−(3+4x)=76
⇒2x−7+5x9x−3−4x=76
⇒7x−75x−3=76
⇒6(7x−7)=7(5x−3) (by cross multiplication)
⇒42x−42=35x−21
⇒42x−35x=42−21
⇒7x=21
⇒x=217=3
∴x=3
Solve: 2x−35+x+34=4x+17