770 : [( 20x + 10 ) : x ] = 35
Tìm x
\(\left(X-2\right)^2=\left(X-2\right)^4\)
\(770\div\left[\left(20X+10\right)\div X\right]=35\)
Tìm số tn biết
770÷[(20x+10)÷x]=35
30-[4 (x-2)+15]=3
\(\left[8X-120\div4\right].3^3=3^6\)
\(\left\{X^2-[8^2-\left(5^2-8.3\right)^3-7.9]^3-4.12\right\}^3=1\)
a) 770:[(20x+100);x]=35
b) [(8x-14):2-2].31=341
c)25.[260-(x+110)-125=0
khó quá bạn nào giúp mình với
Baì 2 Tìm x biết [10 + 20x] : 42011 = 42013
(x –15) .15 = 0 b) 32 (x –10 ) = 32
c) ( x – 5)(x – 7) = 0 d) (x – 35).35 = 35
(2x+1)+(4x+2)+(6x+3)+...+(20x+10)=275
Bài 6. Tìm x ϵ N biết
a) (x –15) .15 = 0
b) 32 (x –10 ) = 32
c) ( x – 5)(x – 7) = 0
d) (x – 35).35 = 35