Answer:
-420
Step-by-step explanation:
Answer:
a. 14
Step-by-step explanation:
make equations
2x this is how old trinity is
x + 2x =42 their ages combined, solve equation
3x =42
14
Answer:
2,734,500
Step-by-step explanation:
27,345 × 113 - 27,345 × 13 ← factor out 27,345 from each term
= 27,345(113 - 13)
= 27,345 × 100
= 2,734,500
(-2,-5)
The first goal with equations like these is to get one of the variables to go away. You can do that by adding/subtracting one equation from the other. Then you solve for the one variable. Then you plug that answer into one of the original equations and solve.