Question

Tìm x:

2 (x-5) -3 (x+7)=14

Ai nhanh, mk tick

rõ ràng nha

Answer 1

2(x-5)-3(x+7)=14

=> 2x-10-3x-21=14

=> x(2-3)-10-21=14

=> x.(-1)-31=14

=> -x=14+31

=> -x=45

=> x=-45

Answer 2

2 (x-5) -3 (x+7)=14

<=>2x-10-3x-21=14

<=>-x-31=14

<=>-x=45

<=>x=-45

Answer 3

\(2\left(x-5\right)-3\left(x+7\right)=14\)

\(2x-10-3x-21=14\)

\(-x=14+10+21\)

\(-x=45\)

\(x=-45\)

vay \(x=-45\)

nho k day

Answer 4

\(2\left(x-5\right)-3\left(x+7\right)=14\)

\(\Leftrightarrow2x-10-3x-21=14\)

\(\Leftrightarrow\left(2x-3x\right)-\left(10+21\right)=14\)

\(\Leftrightarrow-x=14+31\)

\(\Rightarrow x=-45\)

Answer 5

2(x-5)-3(x-7)=14

=> 2x-10-3x-21=14

=> x(2-3)-10-21=14

=> x.(-1)-31=14

=> -x=14+31

=>-x=45

=> x=-45