X/6+X/12+X/7+9+X/2=X求X是多少?
1个回答
先两边乘以12
2X+X+12X/7+108+6X=12X
再两边乘以7
14X+7X+12X+756+42X=84X
75X+756=84X
756=9X
X=756/9
X=84
相关问题
求方程: X+X^2+X^3+X^4+X^5+X^6+X^7+X^8+X^9+X^10+X^11+X^12=12*0.9
x/6+x/12+x/7+5+x/2+4=x (1/6+1/12+1/7+1/2)x+9=x X/6是不是6分之X
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少
﹚(12+x﹚÷2=7 9×﹙x﹢6﹚=2x﹙14+11x﹚ 168-5x=9x .x+4=40-x-8 7×﹙x-2﹚
解方程.7x-9=5x5(x-8)=3x 7x-5x5=2x7X12-10x=18x3(6x-7)=15x+12
5x+6=6x-9 -12x-2=6x-9
解方程. 2x+4=6 35x+13x=9.6 [3/4]x-[2/5]x=[7/12] [7/9]x÷14=[1/2]
4x15/2= 12/5x8= 3/1x4/1= 9/8x10= 6x12/11= 9/2x5/3= 14/6x9/7=
9x^2+6x-8=0 求9x^2+y^2+6x-4y+7