tìm x : 11 - 237 = 405
x : 11 - 237=405 giúp mik với
`x : 11 - 237=405`
`=> x : 11=405+237`
`=> x : 11=642`
`=>x= 642 xx 11`
`=>x= 7062`
`x:11-237=405`
`=>x:11=405+237`
`=>x:11=642`
`=>x=642xx11`
`=>x=7062`
tìm x biết
3^x+1. 3^x+5- 11=718
1125-3^x+2=20^2-4
3^x+3^x+3-15=237
125-(30+x+125)=(x-237)-(8-237) tìm x
125-30-x-125=x-237-8+237
-30-x=x-8
=> -30=2x-8
=> x=-11
Tìm x: x x 405 = 86265
Tìm x : b) x : 315 = 405
b) x : 315 = 405
x = 405 x 315
x = 127575
tìm x:
a, 125-(30+x+125)=(x-237).(8-237)
125-(30+x+125)=(x-237).[8+(-237)]
125-(30+x+125)=(x-237)×(-229)
125-(30+x+125)=x-237×(-229)
125-(30+x+125)=x-(-54273)
125-(30+x+125)=x+54273
125-30+x+125=x+54273
125-39+x=x+54273-125
125-39+x=x+54148
125-x=x+54148-39
125-x=x+54109
125-1x=1x+54109
125-1x=0
1x=125-0
1x=125
x=125÷1
x=125
Tìm x:
x/1.2 + x/2.3+ x/3.4 +...+ x/2017.2018 = -1
405 : 27 x 516
\(\dfrac{6}{7}\) + \(\dfrac{2}{3}\) x \(\dfrac{5}{4}\)
\(\dfrac{9}{5}\) - \(\dfrac{6}{7}\) : \(\dfrac{11}{7}\)
\(405:27\times516=15\times516=7740\)
\(\dfrac{6}{7}+\dfrac{2}{3}\times\dfrac{5}{4}=\dfrac{6}{7}+\dfrac{5}{6}=\dfrac{71}{42}\)
\(\dfrac{9}{5}-\dfrac{6}{7}:\dfrac{11}{7}=\dfrac{9}{5}-\dfrac{6}{11}=\dfrac{69}{55}\)
X * 17 - X * 8 = 405 Tìm X
ai làm nhanh mk k cho miễn là đúng
Ta có :
X x 17 - X x 8 = 405
=> X x ( 17 - 8 ) = 405
=> X x 9 = 405
=> X = 405 : 9
=> X = 45
Vậy X là 45
k mk nha