3X+12.5=5X+7.7
2个回答
3X+12.5=5X+7.7
12.5-7.7=5X-3X
2X=4.8
X=4.8/2
X=2.4
相关问题
2/7x(-5/12)-5/7x5/12-5/3x1/4
解方程.7x-9=5x5(x-8)=3x 7x-5x5=2x7X12-10x=18x3(6x-7)=15x+12
12-(3x-5)=7-5x
7.5x-7x=12.5 0.3+0.3x=0.39
12-3(9-x)=5(x-4)-7(7-x)
5X+12=2×(X+15) 7×(3+X)-12=5X+88 (9.7+2X)÷2=(5.5+5X)÷3
(5x-12)/(x+12)=7/5
6/5x=3.5+7/12
x+12=(5x+12)X 7分之3
(-5)x(-3又6/7)+(-7)x(-3又6/7)-12x3又6/7