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Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

If 3x+8=3x+8 is it one solution or no solution

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36