The topics you should learn are equating denominators and fractions. This is summing up simple fractions.
So we have to make denominators' numbers the same in order to sum up them all (we can sum fractions if the denominators are the same) , and we did it by cross product (that thing on the picture)
Equating by lcm (least common multiple) is the easiest way, because you might see bigger numbers on other questions, and cross product will bring much bigger numbers, so this technic might confuse you.
By the way lcm of 4 and 5 is already 20
Hope it helps!
The order is .. 84%, 7/8, 43/50, 0.91
Answer:
f(x) = x*2+1
Step-by-step explanation:
The vertex form of the function f(x) is 
.
<h2>Given </h2>
Function; 
<h3>What is the vertex form of function?</h3>
The vertex of a parabola is the point at which the parabola passes through its axis of symmetry.
The standard equation which represents the vertex form of the function is;
Where h and k are vertexes of the given parabola.
The function is in vertex form;
Hence, the vertex form of the function f(x) is .
To know more about the Vertex form lick the link given below.
brainly.com/question/9070346
