Answer: 28
Step-by-step explanation:
Answer:
x = -3, y = 7.
Step-by-step explanation:
x + 3y = 18
-3x - 12y = -75
Multiply the first equation by 3:
3x + 9y = 54
Adding the last 2 equations to eliminate x:
-3y = -21
y = 7.
Substitute y = 7 into the first equation:
x + 3(7) = 18
x + 21 = 18
x = 18 - 21
x = -3.
Answer:
28:16
Total of students is 28 and 16 boys
If 3x-7=14, then 3x=21
Conditional Statements always have if-then
