The cost equation for screeners (t-shirt shop)was y=50+7x and the cost equation for

teasers (t-shirt shop) was y=78+5x write one equation that will tell you the number of t-shirts when the cost is the same

To find the number of t-shirts when the cost is the same for both screeners and teasers, we need to set the two cost equations equal to each other and solve for "x", which represents the number of t-shirts.

The cost equation for screeners is y = 50 + 7x,
and the cost equation for teasers is y = 78 + 5x.

Setting these two equations equal to each other, we get:
50 + 7x = 78 + 5x.

To solve for "x", we need to isolate the variable on one side of the equation. Let's subtract 5x from both sides:
50 + 7x - 5x = 78 + 5x - 5x,
2x = 78 - 50,
2x = 28.

To solve for "x", we divide both sides by 2:
2x / 2 = 28 / 2,
x = 14.

So, when the cost is the same for both screeners and teasers, the number of t-shirts will be 14.