(1)4.5×6+4x= 41 27+4x= 41 4x=14 x=3.5 |
(2)2x+1.5x= 42 3.5x=42 x=12 |
(3)(x-4.5)×6=31.8 6x-27=31.8 6x=58.8 x=9.8 |
(4)27-17x=13.4 17x=27-13.4 x=0.8 |
(5)(x+1.7)÷3=1.4 x+1.7=4.2 x=2.5 |
(6)5x+4x=3x+18 6x=18 x=3 |
(7)4:=x:6.5 x=27 x=2.4 |
(8)0.3x+7x-0.25x-1.15=20 7.05x=21.15 x=3 |