(1)去括号得:4x-60+3x=3,移项合并得:7x=63,解得:x=9; (2)方程变形得: 10x+30 2 - 4x?10 5 =- 5 2 ,去分母得:50x+150-8x+20=-25,移项合并得:42x=-195,解得:x=- 65 14 .