To get X by itself you first bring -7 over and get X/5=-1 then multiply both sides by 5 to get X=-5
Since your question is non-specific here are two sensible cases:
$823 at 9.23% ANNUAL COMPOUND interest after 4 years:
$823 (1.0923)^4 = $1171.57
$823 at 9.23% defined as interest over a period of four years (4-year-interest):
$823 * 1.0923 = $898.96
Given data:
The first equation is 3j +14=-5z.
The second equation is -10j=5z .
Add both the equations.
Substitute 2 for j in the first equation.
Thus, the value of j is 2 and z is -4.
Its simple all you have to do is multiply because if the cost per gallon is $2.50 and you have a total of 4,310 then you just multiply 4,310*$2.50 and it equals $10775 hope it helps :))
