Solve
5r-8=2
8r+5s=21
5r-8=2
5r = 10
r = 2
8r+5s=21
8(2) + 5s = 21
5s = 21 - 16
s = ?
Would the answer be 5
To solve the system of equations:
1. Solve the first equation, 5r - 8 = 2, for the variable "r".
Add 8 to both sides of the equation:
5r = 10
Divide both sides of the equation by 5:
r = 2
So, the solution for "r" is 2.
2. Substitute the value of "r" (2) into the second equation, 8r + 5s = 21.
Replace "r" with 2:
8(2) + 5s = 21
Simplify:
16 + 5s = 21
Subtract 16 from both sides of the equation:
5s = 5
Divide both sides of the equation by 5:
s = 1
So, the solution for "s" is 1.
Therefore, the solution to the system of equations is r = 2 and s = 1.