Q. How many solutions does this equation have?−7f−3f=−10fChoices:(A)no solution(B)one solution(C)infinitely many solutions
Combine like terms: Simplify the left side of the equation by combining like terms. −7f−3f=(−7−3)f=−10f
Compare left and right sides: Compare the simplified left side of the equation to the right side.The equation now reads –10f=–10f.This statement is true for every value of f.Therefore, the equation has an infinite number of solutions.
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