x/2-5x+7/3≥1-3x-5/4
2个回答
x/2-5x+7/3≥1-3x-5/4
不等式两边同乘以12,
得6x-60x+28≥12-36x-15,
移项有31≥18x,
即x≤31/18
相关问题
(4.5-x)*7=17.5 x/2+4=3/2x+1 7/2*2/3-4x=7/3 5/8(x-.3)=75% 1+x
用线性代数解x1+3x2+5x3+7x4 =12,3x1+5x2+7x3+x4=0,5x1+7x2+x3+3x4=1,7
x1 + x2 + x3 + x4 + x5 = 7 4x1 + 2x2 + 3x3 + 2x4 - 2x5 = 5 x
3x+7=4x+5,4x-6=-3+5x,2x+1-x=3-3x,3x-1=x,3x-2=5x-6,4x+5=3x+3-
解不等式组 (1)3x-2/x-1<4x-5,x-2/7>4-5/x (2)2/7-x -3<5分之3+4x -4,3/
5/12x-x/4=1/3 0.5x-0.7=6.5-1.3x 3(x-7)+5(x-4)=15 (y-1)/2=2-(
1/2(7x-5)+1/3(5x-3)=3(2x+3)+4(3x-1)
X1 - X3 - X4 -5X5=0 X1+2X2+3X3+3X4+7X5=0 X1+X2+X3+X4+X5=0 X2
X/12+5=4X/3 (3X+2)/4-(5X+1)/2=2 7X+5=6(X+1)
x+5=4x-3 3/4x-2=x+1 6x+5=3x-7 -13x+4=-4x-5 -2/3x-3=5/4x+2 是方