Answer:
Statement Reason
[tex]\frac{1}{2}(10m-14)+9=12[/tex] Given
[tex]5m-7+9=12[/tex] Distributive property
[tex]5m+2=12[/tex] Combine like terms
[tex]5m=10[/tex] Subtraction property of equality
[tex]m=2[/tex] Division property of equality
Step-by-step explanation:
The given equation is
[tex]\frac{1}{2}(10m-14)+9=12[/tex]
We need to prove m=2.
[tex]\frac{1}{2}(10m)+\frac{1}{2}(-14)+9=12[/tex] (Distributive property)
[tex]5m-7+9=12[/tex]
[tex]5m+2=12[/tex] ( Combine like terms)
Subtract 2 from both sides.
[tex]5m=12-2[/tex] (Subtraction property of equality)
[tex]5m=10[/tex]
Divide both sides by 5.
[tex]\frac{5m}{5}=\frac{10}{5}[/tex]
[tex]m=2[/tex] (Division property of equality)
Hence proved.