$Solve the following system: < 3 X = 30 (equation 1) •J 2 }’ 4- X = 30 (equation 2) ( -2 Z 4- y = 3 (equation 3) 1 Subtract 7 x (equation 1) from equation 2: 3 a: =30 (equation 1> 2 y Z — 20] (equation 2) V - 2 Z = 3 (equation 3) Divide equation 1 by 3: \*I. 2 ~ ^1 1) 2 y =20 (equation 2)$