Simplify the expression by combining like terms. 15+12x−5x+4y−7

Simplified form of given expression  15+12x−5x+4y−7  is 7x + 4y + 8

Step-by-step explanation:

Given expression  15+12x−5x+4y−7

We have to solve the given expression by combining like terms.

Combining like terms is a way in which we add the terms having same variable with same power.

Consider the given expression  15+12x−5x+4y−7

Here, we have two variables x and y

So , 12x and -5x  are liek terms so adding them we get, (12-5)x = 7x

Also, 15 and -7 are constants and like terms also, so adding them we get, 15 - 7 = 8

Thus, simplified form of given expression  15+12x−5x+4y−7  is 7x + 4y + 8

4.0 ft

step-by-step explanation:

4.0 ft

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.