Answer:
line 2
Step-by-step explanation:
#1 You got it right
When a you add a number you need to add to both sides
So line 2 was an error because it only added on the left side, not right side
Leah must save $33 more dollars.
$44 x 25% = $11
$44 - $11 = $33
Answer:
2/3 + 1/5 = 13/15
Step-by-step explanation:
Mom is 30 years old when Serena is 10 because 10 x 3 = 30.
They are 20 years apart. [This is key]
Half (.5) of mom's age will be = to Serena's age.
Therefore, when mom is 40 years old, Serena is 20 years old.
We can see that half of 40 = 20.
Hope this makes sense!