去括号得,6x-3-6x+12=10x+4-x-3,
移项得,6x-6x-10x+x=4-3+3-12,
合并同类项得,-9x=-8,
把系数化为1得,x=
8 |
9 |
(2)原方程可化为:
4x+9 |
5 |
2x+3 |
3 |
x−5 |
2 |
去分母得,6(4x+9)-10(2x+3)=15(x-5),
去括号得,24x+54-20x-30=15x-75,
移项得,24x-20x-15x=-75-54+30,
合并同类项得,-11x=-99,
把系数化为1得,x=9.
2x−1 |
2 |
5x+2 |
3 |
x+3 |
6 |
0.4x+0.9 |
0.5 |
0.03+0.02x |
0.03 |
x−5 |
2 |
8 |
9 |
4x+9 |
5 |
2x+3 |
3 |
x−5 |
2 |