Answer:
Step-by-step explanation:

Answer:
$84
Firstly, what we must do, is establish a system of equations:


Due the circumstances, it is decided we will use the method of substitution:


↓

Now, we solve the 2-variable equation above:








Now, we must see how much money each one of them had & the price of the jacket:
Now we know that Jim had $126. In other words, $126 is
of his money (total money).
So, if Jim has $126, which corresponds to
of his money,
of his money is:



Hope it helped,
BiologiaMagister
2.4z + 1.2z = (2.4 + 1.2)z = 3.6z;
We have 3.6z - 6.5 =0.7 / +6.5;
3.6z = 7.2 / ×10;
36z = 72 / ÷36;
z = 2.
First collect like terms for x^2:
x^2 + 3x^2 = 5x^2
Then collect like terms for x:
-2x + 5x = 3x
Collect like terms for normal numbers:
7 + - 3 = 4
Put them altogether:
5x^2 + 3x + 4