What is the solution to the system of equations x+y=10 and x+2y=4 using the linear combination method?

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.

3x+9+4x+x=8x+9that's the answer for your question.