Question 1127430
J = price of one pair of jeans
S = price of a sweatshirt<br>

(1)  5J+2S = 213
(2)  3J +4S = 195

(1')  10J+4S = 426   (multiplied eq(1) by 2)
-(2)  3J +4S = 195
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       7J = 231
         J = 231/7 = 33

Plug this into (1) and solve for S (one way to do it):
S = (213 - 5J)/2 = (213 - 5*33)/2 = 24

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Ans:  One sweatshirt costs $24  
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Check: 
 5*33+2*24 = 165+48 = 213
 3*33+4*24 = 99+96 = 195