Tìm x biết (x+2)+(4x+4)+(7x+6)+...+(25x+18)+(28x+20)=1560
(x+2)+(4x+4)+(7x+6)+...+(25x+18)+(28x+20)=1560
[x+2]+[4x+4]+[7x+6]+...+[28x+20]=1560
Tìm x nếu
(x + 2) + (4x + 4) + (7x + 6) + (10x + 8) + ... +(25x + 18) + (28x + 20) = 1560.
5 (x+7)-10 =50
42 :x-5 =1
(x-1)(x-4) =5
7x+8x-5x = 70
4x+ 9 x - x = 60
Tìm x
x.73+x.27=500
4x+7x=15
(x+5)-2.(x-7)+5.(8+x)-7.(3-2x)=(42-x)-5.(7x-7)+(4x-1)+34602
x + 2x + 3x + 4x + 5x + 6x + 7x + 8x + 9x = 90
(x+5)-2.(x-7)+5.(8+x)-7.(3-2x)=(42-x)-5.(7x-7)+(4x-1)+34602
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