What is the value of x in the solution to this system of linear equations?

x+y=4
x-y=6

X = 5

Step-by-step explanation:

x+y=4

x-y=6

Substitute x = 4 - y

4 - y - y = 6

Substitute y for -1

x = 4 - (-1)

x = 5

75 tickets have been sold so far.

step-by-step explanation:

in this question it is clearly mentioned that 45 children's tickets have been sold and this number is 60% of the total tickets sold.

now let's assume the total number of tickets sold be x.

then 60% of x = 45

⇒

⇒ x(.6) = 45

by dividing with .6 on both the sides of the equation

⇒ x = 75

therefore 75 tickets have been sold so far.

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step-by-step explanation: