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5/15

Step-by-step explanation:

if the denominator is 15, and 3*5 is 15, then you miltiply 3 to 2/5. that get you 6/15. next you subtract 11 and 6, which is 5. so the answer is 5/15

1/3 of a mile.

Step-by-step explanation:

You know that the total distance is 11/15. The distance of part of it is 2/5(or 6/15). Thus the other part must be 5/15 or 1/3

infinitely many solutions

step-by-step explanation:

we have been given the equation;

2(2x + 3) = -4 + 2(2x + 5)

we need to determine the value of x.

2(2x + 3), we expand this expression to obtain 4x + 6

similarly 2(2x + 5) will become 4x + 10

now we have;

4x + 6 = -4 + 4x + 10

4x + 6 = 4x + 10 - 4

4x + 6 = 4x + 6

the expression on the left hand side is identical to the one on the right hand side. therefore, we are looking at just a single straight line whose equation is;

y = 4x + 6

consequently, we shall have infinitely many solutions

529 and 531

step-by-step explanation: