<span>to isolate y first step as follows;
5x - 7y - 10
-7y = -5x -10 (change the 5x to this side as negative)
</span><span>then divide by -7 and you have
-7y = -5x + 10
--- --- ---
-7 -7 -7
then you havd:
y = 5/7x -10/7</span>
Answer:
29000/1
Step-by-step explanation:
Assuming one electrician-day is the same as another, the total job is ...
... (18 electricians)×(35 days) = 630 electrician·days
When that work is split among 28 electricians, it can be expected to take ...
... (630 electrician·days)/(28 electricians) = 22.5 days
