移項(xiàng)得4x+3x-6x-7x=-77+60
合并同類項(xiàng)得-6x=-17,
系數(shù)化為1得x=
17 |
6 |
(2)方程兩邊都除以361,得(-x+1)2=
16 |
361 |
-x+1=±
4 |
19 |
x=
23 |
19 |
15 |
19 |
(3)方程兩邊都除以2得(x-1)3=-
125 |
8 |
x-1=-
5 |
2 |
x=-
3 |
2 |
(4)去分母得6x+3-12=8x-4-(10x+1)
移項(xiàng)得6x-8x+10x=-4-1-3+12
合并同類項(xiàng)得8x=4,
系數(shù)化為1得x=
1 |
2 |