Hey there!
[tex]\mathsf{(7 \times 10^8) - (4 \times10^6)}[/tex]
[tex]\mathsf{= 7\times10^8 - 4\times10^6}[/tex]
[tex]\mathsf{10^8}[/tex]
[tex]\mathsf{= 10 \times 10 \times 10 \times 10 \times 10 \times 10 \times 10\times 10}[/tex]
[tex]\mathsf{= 100 \times 100 \times 100\times 100}[/tex]
[tex]\mathsf{= 10,000\times10,000}[/tex]
[tex]\boxed{\mathsf{\bf = 100,000,000}}[/tex]
[tex]\mathsf{7\times100,000,000 - 4 \times10^6}[/tex]
[tex]\mathsf{10^6}[/tex]
[tex]\mathsf{= 10 \times 10 \times 10 \times 10 \times 10\times10}[/tex]
[tex]\mathsf{= 100\times 100\times100}[/tex]
[tex]\mathsf{= 10,000\times100}[/tex]
[tex]\boxed{\mathsf{= \bf 1,000,000}}[/tex]
[tex]\mathsf{7 \times 100,000,000 - 4 \times 1,000,000}[/tex]
[tex]\mathsf{7\times100,000,000 = \boxed{\bf 700,000,000}}[/tex]
[tex]\mathsf{700,000,000 - 4 \times1,000,000}[/tex]
[tex]\mathsf{4\times 1,000,000 = \boxed{\bf 4,000,000}}[/tex]
[tex]\mathsf{700,000,000 - 4,000,000}[/tex]
[tex]\boxed{\mathsf{= \bf 696,000,000}}[/tex]
[tex]\boxed{\boxed{\large\textsf{Answer: \huge \bf 696,000,000}}}\huge\checkmark[/tex]
[tex]\large\textsf{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
