(45-9x)÷4.5=4

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(45-9x)÷4.5=4(45-9x)÷4.5=4(45-9x)÷4.5=4:(45-9x)÷4.5=445-9x=189x=27x=3

(45-9x)÷4.5=4
(45-9x)÷4.5=4

(45-9x)÷4.5=4
:(45-9x)÷4.5=4
45-9x=18
9x=27
x=3

(45-9x)÷4.5=4 8x-5.5x=7.57.2x÷3.6=2 3x+6x-8x=0.7 12x-2x-5x=4.512x-x=0 5x+x=1.8 3.2x+1.8x=64.8x-0.8x=6 6.3-0.3x=9.6 8.6x-8.5x=0.720x-2x=36 9x+6x=4.5 18x-12x=5.42x-1.6x=3.6 18x+3x=7×6 1.2x-0.5x=0.71.3x+2.7x=1 4x-3.2x=6.4 0.8x+3.2x+3x=562.8x-2x=7.2 请问,这6道关于一元一次方程的题目我都做对了吗?X-5=6X-5+5=6+5X=110.3X=45X=1505X-2X=93X=9X=32X+3X+4X=189X=18X=2-3X+0.5X=102.5X=10X=47X-4.5X=2.5乘以3-52.5X=2.5X=16X-7=4X-56X-4X=7+52X=12X=6 x(2-1/x)+x/(x^2-2x)÷(3-x)/(x^2-4)2.2/3+x/(3x-1)=1/9x-3 解方程:6.9x=23.12 6(x+2)=72 6.8x+2.3×=30.02 (9-4.5)x=4.5 6.8x+2.3×3=30.02 x÷(6.3-2.3)=1.16.8x+6.9x=27.4 1.8(x+0.2)=7.2 3x-4×6=48 6x+7x=26 x+3.5×3=18 解方程.9x一2x=10.5 x÷4.5=4 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 21分之10x÷3分之2=7分之3x-3分之1x-2分之1x=190x-53x=7408.5x-6.9x=43.3x-200=0.2x+1101.02+0.4x+2.6x=3.428.9x-67=4.5x+656x-58=3x+1410x-20=5x+806x+5=10x-3420-1.4x=9.8x-288.2x+5.4x=272 9x-7-6x+5=10 45-6x+9x=15 3x+5+2x+4=14 39-5x=9 3x÷5=4.89x-7-6x+5=10 45-6x+9x=15 3x+5+2x+4=14 39-5x=9 3x÷5=4.8 6X-54=30 7X-36=13 3.5X+4=4.7 2X- 16=23 (X-9)÷7=6 (X+3)÷5=45 0.3X÷2=9 3x2.1+2X=13.49x(X-6)=54 4x(X+8.2)=40.5要地等式 x-2/(x^2-9)(1+(2x-7/x^2-4x+4)÷(x+1)/(x+3)其中x=2010 9x+7x-x=4.5 x÷12-8+4 (6x-90+2x)÷2=55 12x=24-6x=102 35x-77=28x x-47.26=0,45*1,08 (9x-52+3x)÷2 =100x+14=2x-4 先化简,再求值:(1)(x+1/x²-x-x/x²-2x+1)÷1/x,x=根号2+1 (2)(1+x-3/x+3)÷2x/x²-9 x=根号3+3 (3)4-x/x-2÷(x+2-12/x-2)x=根号3-4 (4)x-3/2x-4÷(5/x-2-x-2) x=根号3-2 4(x-9)=8 0.3×5+3x=4.5 9×3-1.7x=13.4 126÷x=42 96÷64(x-9)=80.3×5+3x=4.59×3-1.7x=13.4126÷x=4296÷6+4x=56(x-3)÷2=7.54x-3×9=297(5x+6)=918(x-6.2)=41.613(x+5)=1694.2×3-3x=5.1请写在纸上 x-4/x-5 - x-5/x-6=x-7/x-8 - x-8/x-9求x=? 4x+9x=13x 9x-x+4x=( )