Question 342671
1.{{{R+C=69}}}
.
.
.

{{{45R+35C=2635}}}
2.{{{9R+7C=527}}}
From eq. 1,
{{{R=69-C}}}
Substitute into eq. 2,
{{{9(69-C)+7C=527}}}
{{{621-9C+7C=527}}}
{{{-2C=-94}}}
{{{highlight(C=47)}}}
Then from eq. 1,
{{{R+47=69}}}
{{{highlight(R=22)}}}
.
.
.
22 Rams jerseys and 47 Cardinals jerseys were sold.