Lens Combination Magnification Change

A thin convex lens of focal length 5 cm and a thin concave lens of focal length 4 cm are combined together (without any gap) and this combination has magnification m₁ when an object is placed
10 cm before the convex lens. Keeping the positions of convex lens and object undisturbed a gap of 1 cm is introduced between the lenses by moving the concave lens away, which lead to a change in magnification of total lens system to m₂. The value of $\left| {\,\frac{{{m_1}}}{{{m_2}}}\,} \right|$ is ______.

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