Answer:
Mary has 16 video games.
Step-by-step explanation:
Let John be [tex]x[/tex] and Mary be [tex]x+2[/tex]
Equation: [tex]x+(x+2)=30[/tex]
Combine like terms: [tex]2x+2=30[/tex]
Subtract 2 from both sides: [tex]2x=28[/tex]
Divide both sides by 2: [tex]\frac{2x}{2} =\frac{28}{2}[/tex]
[tex]x=14[/tex]
Hold up!
In the beginning, we set [tex]x[/tex] as John, and [tex]x+2[/tex] as Mary. The question asks for Mary, so [tex]14+2=16[/tex].
Let's check our work: [tex]x+(x+2)=30[/tex]
Replace [tex]x[/tex] for 14...
[tex]14+(14+2)=30[/tex]
[tex]14+16=30[/tex]
[tex]30=30[/tex]
Hope this helped! :)
