Elga's age = x
Alvin's age = x + 7
x + x + 7 = 97.
Simplify the left side of the equation
2x + 7 = 97.
Subtract 7 from each side
2x = 90.
Divide each side by 2
x = 45
Since x is equal to Elga's age, Elga is 45 years old
16 - -15 = 31 (negative - negative = positive)
hope this helps! :)
Answer:
elimination
Step-by-step explanation:
Answer:
There are 8 possible combinations.
Look at this example:
2 sandwiches: PB&J, turkey sandwich
4 drinks: soda, water, lemonade, tea
1 dessert: cake
all 8 combos:
- PB&J, soda, cake
- PB&J, water, cake
- PB&J, lemonade, cake
- PB&J, tea, cake
- turkey sandwich, soda, cake
- turkey sandwich, water, cake
- turkey sandwich, lemonade, cake
- turkey sandwich, tea, cake
hope this helps
