If 40% or .4 of her savings is $85 then we can write the equation .4s=$85 (s being the original amount in savings)
Divide both sides by .4 to get s= $212.50 as the original amount that she had
We can eliminate one of the variables to solve for the other variable, as in both equations, y has opposite coefficients. Combine these two equations:

Divide both sides by 2 to get x by itself:

Plug this value into the second equation:

Subtract 123 from both sides to get y by itself:

Malik has
123 domestic stamps and 89 foreign stamps.
Answer:
x=15
Step-by-step explanation:
3x=45
We want to get x by itself, so we divide each side by 3
3x/3 = 45/3
x =15
Answer:
Step-by-step explanation:
Easy way to solve
5^4 = 625.
5^12=244140625.
Thus, 625m=244140625.
Divide both sides by 625/
m=390625, or 5^8.
Better way to solve
When dividing by exponents 
Thus, simply do 12-4=8 to know that m=5^8.
Hope it helps <3