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help me with math pls

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The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

With this question substitute t=3 and t=5 to determine if the two expressions are equivalent. 4(t + 3) 4t+12 which statements are true? check all that apply. a. the value of both expressions when t =5 is 32. b. the two expressions are not equivalent. c. the value of both expressions when t=3 is 15. d. the value of both expressions when t=5 is 23. e. the two expressions are equivalent. f. the value of both expressions when t=3 is 24.

Using elimination, what is -4x+2y=-12 4x+8y=-24