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Sagot :
Tracy = x
Jocelyn = 3x - 80
When y = 10
y = 3x - 80
10 = 3x - 80
90 = 3x, x = 30
Solution: Tracy spent $30
Jocelyn = 3x - 80
When y = 10
y = 3x - 80
10 = 3x - 80
90 = 3x, x = 30
Solution: Tracy spent $30
If Daniel spent x
x dollars, then Tracy spent 3x−8
3x−8 dollars. Since Tracy spent $10, we can write the equation:
3x−8=10
3x−8=10
Solve for x
x. Add 8 to both sides:
3x=18
3x=18
Divide both sides by 3:
x=6
x=6
So, Daniel spent $6.
x dollars, then Tracy spent 3x−8
3x−8 dollars. Since Tracy spent $10, we can write the equation:
3x−8=10
3x−8=10
Solve for x
x. Add 8 to both sides:
3x=18
3x=18
Divide both sides by 3:
x=6
x=6
So, Daniel spent $6.
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