Find the value of b that makes the fraction equivalent.

12/3 = b/15

12/3 = 4

b/15

= 15 × 4

= 60/15

I am not good with maths but I can guess this. So if it's wrong, then please understand that I am not a math kid. But hope it's correct ;)

there are many solutions.

step-by-step explanation:

step 1: simplify both sides of the equation.

4x+6=4x^2+10x−4

step 2: subtract 4x^2+10x-4 from both sides.

4x+6−(4x^2+10x−4)=4x^2+10x−4−(4x^2+10x−4)

−4x^2−6x+10=0

step 3: factor left side of equation.

−2(2x+5)(x−1)=0

step 4: set factors equal to 0.

x=-5/2 or x=1