Solve 5kx+6=7kx for x

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Write the standard form of an equation with (see picture below)

Grant simplified the expression 1.5(-3.2 + 2.5) his work is shown below explain the error in grants work

Acollege is selling tickets for a winter fund-raiser. one day, krissa sold 14 adult tickets and 8 student tickets for a total of $376. the next day, she sold 7 adult tickets and 11 student tickets for a total of $272. krissa wanted to find the price of one adult ticket, a, and the price of one student ticket, s. she wrote and solved the following system of equations.