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4 < b

Step-by-step explanation:

First you distribute 3 to b and -5.

Your problem should look like this: 3b-15 < -2b +5

Then you subtract 5 from both sides. Your problem should look like this: 3b -20 < -2b. now you subtract 3b from both sides. It should look like this: -20 < -5b. Next divide both sides by -5. In the end your answer is 4 < b. Or four is less than b.

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