解得t=-9;
(2)整理,得7-4x=12+12x-21,
移项得,-4x-12x=12-21-7,
合并同类项得,-16x=-16,
解得x=1;
(3)整理,得5x-10=4-4+x,
移项得,5x-x=10,
合并同类项得,4x=10,
解得x=
5 |
2 |
(4)整理,得4(1-y)-12y=36-3(y+2),
去括号得,4-4y-12y=36-3y-6,
移项合并同类项得,-13y=26,
解得y=-2;
(5)整理,得1.5x-1-5x=1.5,
合并同类项得,-3.5x=2.5,
解得x=-
5 |
7 |