Ithink of a number i multiply this number by 8, then subtract 66 the result is twice the number tat i was thinking of. what is it?

➷ You can form this equation:

(call the unknown number x)

8x - 66 = 2x

Add 66 to both sides:

8x = 2x + 66

Subtract 2x from both sides:

6x = 66

Divide both sides by 6:

x = 11 <== this is the number

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11 feet 6 inches and 8 feet 6 inches

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: