Infinitely many because if you subtract 7x from both sides, you get 4 = 4, which is true at all times no matter what x is.
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it equals 38 because eit makes alot of sense and I e it with
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Step-by-step explanation:
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when you simplify 600:450 to the smallest it can be, its 4:3. For proof, multiply 4:3 by 150. 4 times 150 is 600 and 3 times 150 is 450.