What type of bond is formed if the atoms share electrons when the elements are combined?

When the elements are combined and they share electrons the type of bond formed is named covalent.

Covalent bond results when the valence electrons of two atoms are shared; in this case the shared electrons are considered to be part of the complete outer energy level of both atoms.

A molecule is formed when two or more atoms are bonded through covalent bonds. 

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

The answer would be