Question

x-(5-x)=x-15

tìm x

Giúp mik vs mik cám ơn nhiều

Answer 1

x-(5-x)=x-15

<=>x-5+x=x-15

<=>x-5+x-x+15=0

<=>x+10=0

<=>x=-10

Vậy x=-10

Answer 2

Bài làm

x - ( 5 - x ) = x - 15

=> x - 5 + x - x + 15 = 0

=> 10 - x = 0

=> x = 10

Vậy x = 10

Answer 3

Mik lm sai nha, phải ra là 10+x mới đúng nha. Vì x - 5 + x - x + 15 = 0

Thì phải gộp ( x + x - x ) + ( -5 + 15 ) = 0

=>X + 10 = 0

=> X = -10

Answer 4

\(x-\left(5-x\right)=x-15\)

\(\Leftrightarrow x-5+x-x+15=0\)

\(\Leftrightarrow x+10=0\)

\(\Leftrightarrow x=-10\)

Answer 5

x - ( 5 - x ) = x - 15

<=> x - 5 + x = x - 15

<=> x + x - x = -15 + 5

<=> x = -10

Answer 6

x-/5-x/=x-15

x-5+x-x+15+0

x+10=0

x+10

Answer 7

\(x-\left(5-x\right)=x-15\)

\(x-5+x-x+15=0\)

\(x+10=0\)

\(x=-10\)

Answer 8

\(x-\left(5-x\right)=x-15\)

\(\Leftrightarrow x-5+x=x-15\)

\(\Leftrightarrow2x-5=x-15\)

\(\Leftrightarrow2x-x=-15+5\)

\(\Leftrightarrow x=-10\)