Question
substitution for 5r-s=5 -4r+5s=17
Answers
PsyDAG
Rearrange first equation.
s = 5r - 5
-4r + 5s = 17
Substitute 5r - 5 for s in the second equation and solve for r. Put that value in the first equation to solve for s. Check by putting both values in the second equation.
s = 5r - 5
-4r + 5s = 17
Substitute 5r - 5 for s in the second equation and solve for r. Put that value in the first equation to solve for s. Check by putting both values in the second equation.