5m-2(m-3)-5(4-5m)=-7

Solution for 5m-2(m-3)-5(4-5m)=-7 equation:

5m-2(m-3)-5(4-5m)=-7

We simplify the equation to the form, which is simple to understand 
5m-2(m-3)-5(4-5m)=-7

Reorder the terms in parentheses
5m+(-2m+6)-5*(4-5m)=-7

Remove unnecessary parentheses
+5m-2m+6-5+*(+4-5m+)=-7

Reorder the terms in parentheses
5m-2m+6+(-20+25m)=-7

Remove unnecessary parentheses
+5m-2m+6-20+25m=-7

We move all terms containing m to the left and all other terms to the right. 
+5m-2m+25m=-7-6+20

We simplify left and right side of the equation. 
+28m=+7

We divide both sides of the equation by 28 to get m. 
m=0.25