Question

Can anyone please help me? I dont understand this!

Answer 1

"The force of gravity, F..."
So we start with just
F

"... is equal to..."
F=

"... the product of..." means we're going to multiply some things. What will we be multiplying together? Answer: "the gravitational constant (G), the mass of the first object (m1), and the mass of the second object (m2)..."
F = G × m1 × m2 ...

"... divided by..."
F = (G × m1 × m2) ÷ (...)

"... the square of..."
F=(G × m1 × m2) ÷ (...)^2

"...the distance between their centers (d)."
F=(G × m1 × m2) ÷ (d^2)

Answer 2

`\bf \stackrel{\textit{force of gravity}}{F}~~,~~\stackrel{\textit{gravitational constant}}{G}~~,~~\stackrel{\textit{first mass}}{m_1}~~,~~\stackrel{\textit{second mass}}{m_2} \\\\\\ \stackrel{\textit{distance of masses centers}}{d}\implies \stackrel{\textit{squared that}}{d^2}\\\\ -------------------------------\\\\ \stackrel{\textit{F equals product of }G\cdot m_1\cdot m_2\textit{ divided by square of }d}{F=\cfrac{G\cdot m_1\cdot m_2}{d^2}}`