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Solve the following equation for x, in terms of a and b. ax=15+bx? How can you use a number line to order 2/8,7/8,3/8,5/8 from greatest to least? Whats an everyday problem that needs a simple solution? The height of a triangle is 4 times the base. The area is 72 sq.inches. Find the base? How do you solve the following: (x-3)(x+5)=-7?