# "This follows as:" #
# \qquad \qquad lim_{ x rarr 0 } sinx/{ 7 x } \ = \ 1/7 cdot lim_{ x rarr 0 } sinx/x #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \ = \ 1/7 cdot \underbrace{ lim_{ x rarr 0 } sinx/x }_{ "fundamental trig limit" = 1 } #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \ = \ 1/7 cdot 1 \ = \ 1/7. #
# "Thus:" #
# \qquad \qquad \qquad \qquad \qquad \qquad \qquad \qquad \ lim_{ x rarr 0 } sinx/{ 7 x } \ = \ 1/7. #