-2x + y = 4 4x - 3y = -7
y= 2x + 4
4x - 3(2x+4) = -7
4x - 6x - 4 = -7
-2x - 4 = -7
-2x = -3
x = 3/2

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.