11x(X-5)=5xX+11
11xX-55=5xX+11
11xX-5xX=11+55
6xX=66
X=66:6=11
Ta có : 11.(x - 5) = 5x + 11
=> 11x - 55 = 5x + 11
=> 11x - 5x = 11 + 55
=> 6x = 66
=> x = 66 : 6
=> x = 11
\(11\times\left(x-5\right)=5\times x+11\)
\(11x-11\times5=5x+11\)
\(11x-55=5x+11\)
\(11x-5x=11+55\)
\(6x=66\)
\(x=11\)
11x(X-5)=5xX+11
=> 11xX - 11x5 = 5xX+11
=> 11xX - 55 = 5xX+11
=> 11x X= 5xX +11+55=5xX + 66
=> 6xX= 66( bớt cả 2 vế đi 5xX)
=>X= 66:6= 11
VẬY X=11
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cảm ưn
Ta có :
11 x ( X - 5 ) = 5x + 11
suy ra :
11x + 55 = 5x + 11
11x - 5x = 11 + 55
6x = 66
x = 66 : 6
x = 11