Question

4.(x-2) = 5.(x+3)

Answer 1

4(x-2)=5(x+3)
4x-8=5x+15
4x-5x=8+15
-x=23
x=-23
vậy ...

Answer 2

4(x - 2) = 5(x + 3)

\(\Leftrightarrow\) 4x - 8 = 5x + 15

\(\Leftrightarrow\) 4x - 5x = 15 + 8

\(\Leftrightarrow\)        -x  = 23

\(\Leftrightarrow\)        x   = -23

Answer 3

\(x(-2)=5(x+3)\)

\(4x-8=5(x+3)\)

\(4x-8=5x+15\)

\(4x-8+8=5x+15+8\)

\(4x=5x+15+8\)

\(4x=5x+23\)

\(4x-5x=5x+23-5x\)

\(-x=5x+23-5x\)

\(-x=23\)

\(\dfrac{-x}{-1}=\dfrac{23}{-1}\)

\(x=\dfrac{23}{-1}\)

\(x=-23\)

(biết có zậy)

Answer 4

4(x - 2) = 5(x + 3)

4x - 8 = 5x + 15

4x - 5x = 15 + 8

       -x  = 23

       x   = -23