Answer:
see explanation
Step-by-step explanation:
Given the 2 equations
2r + 3s = - 5 → (1)
6s = 2r → (2) ( divide both sides by 2 ), then
r = 3s
Substitute r = 3s into (1)
2(3s) + 3s = - 5
6s + 3s = - 5
9s = - 5 ( divide both sides by 9 )
s = -
Substitute this value into either of the 2 equations and evaluate for r
Substituting into r = 3s, then
r = 3 × - = -
Solution is r = - and s = -
6
The electrician can wire 6 rooms with 3 3/5 rolls of wire;
3 3/5= 18/5
18/5 divided by 3/5= 6
<em><u>6/7 is greater then 6/8.</u></em>
<em><u>I hope this helped! :D :) :P :3</u></em>