五年级数学解方程
1.53x-15x = 76->；x=76/(53-15)=2
2.8(x+5)=56 ->x=56/8 - 5 =2
3.6.8x-2x = 4.2->；x=4.2/4.2=1
4.2x/3 = 18->；x=27
5.7x=8.19乘以3-> x=3.51
6.4.5x+45 = 90->；x=10
7.2x+3.5乘以2 = 2 = 18->；x=11/2=5.5
8.x-2.6x 3 = 1.09->；x=8.89
2.8(x+5)=56 ->x=56/8 - 5 =2
3.6.8x-2x = 4.2->；x=4.2/4.2=1
4.2x/3 = 18->；x=27
5.7x=8.19乘以3-> x=3.51
6.4.5x+45 = 90->；x=10
7.2x+3.5乘以2 = 2 = 18->；x=11/2=5.5
8.x-2.6x 3 = 1.09->；x=8.89