6.4x-3.5=3.6x+2.1
6.4x-3.5=3.6x+2.1
(X+X)+(X-X)+(X*X)+(X/X)=100
2x+3.6*2=12.4 3(x+3.6)=18.6 x+3.5x=13.5 27x-4x=34.5 3x+2.8=4
(x-3.6)/4=(x+4.8)/8x 求x
3.6x-x=3.25
3.6x-x=6.5
x+12.5=3.5x
解方程 x+3.2=6.4 x-1.8=4 x-2=15 1.6x=6.4 x/7=0.3 x/3=2.1
1.x+x+x+y+y=6.4 y+y+y+x+x=7.1 x= ( ) y=( ) 2.1,4,7,10,13……这串
函数f(x)=[x]的函数值表示不超过x的最大整数,例如:[-3.5]=-4,[2.1]=2.证明:g(x)=x-f(x
2.1x+2.4×3.5=14.7 (100-5x)÷6=15 3x+4x=105 7x-x+8=
486-3.6X=3.5(X-15)怎么算