Answer:
first number = 2
second number =10
Explanation:
here's how you gonna do it
we will use simultaneous equations because there are 2 conditions about the same two numbers ..
X for 1st number ... Y for the 2nd
X + Y = 12 (1)
5X + 2Y = 30 (2)
we have to make one of the variables equalled either by multiplying x in (1) by 5 ..or Y by 2 ...lets do the 2nd option
2X + 2Y = 24 lets call it (1)*
5X + 2Y = 30 (2)
if both 2Y are positive or negative.. we'll use subtraction (if both 2Y were different one's positive and other’s negative we will use addition)
(2) - (1)*
3X = 6 then divide both sides by 3
X = 2
now lets find the other value using equation (1)
2 + Y = 12
then Y = 10