(165)3 x-42÷14=15
(166)12+4x=56
(167)22-14x=12
(168)X+8.3=10.7
(169)5x=30
(170)x-5.6=9.4
(171)x÷0.8=90
(172)3x-8=16
(173)3x+9=27
(174)5.3+7x=7.4
(175)3x÷5=4.8
(176)X-0.8X=6
(177)12x+8x=4.8
(178)7(x-2)=49
(179)4×8+2x=36
(180)(x-2)÷3=7
(181)x÷5+9=21
(182)(300-x)÷5=30
(183)91÷x=1.3
(184)41-3x=17
五年级解方程180题答案
(1)(0.5+x)+x=9.8÷2
0.5+2x=4.9
0.5+2x-0.5=4.9-0.5
2x=4.4
2x÷2=4.4÷2
X=2.2
(2)2(X+X+0.5)=9.8
2x+2x+1=9.8
4x+1-1=9.8-1
4x=8.8
4x÷4=8.8÷4
X=2.2
(3)25000+x=6x
25000+x-x=6x-x
5x=25000
5x÷5=25000÷5
X=5000
(4)3200=440+5X+X
6x+440=3200