Divide the numbers by (prime) numbers. The numbers should both be divisible by the (prime) numbers
<span>D-21.4=87.9 \ solve for D
add 21.4 to both sides
</span><span>D - 21.4 +21.4 =87.9 + 21.4
simplify
D = 109.3</span>
These number r called patterns
Change them into improper fractions
and then find a common denominator, then minus, add, whatever for each one
Answer:
11+11+11+11=44
Do I have to use different numbers?
10+14+12+8=44