The addition property of equality justifies this. You could also say that she simply subtracted 7, and then it would be the subtraction property of equality. This is the case because if you add or subtract (or multiply or divide) the same number on both sides of an equation, the equation will still be the same.
Hope it helps!
30X15=450. 450:100= 4,50. 30+4,50= 34,50
Answer:
5 or 5/1
Step-by-step explanation:
did the math, this is the result. Not sure if it's right, correct me if I'm wrong
Answer:
The answer is 66.
Step-by-step explanation:
Subtract the two distances, and the answer is 266. Have a great day!
Answer:
7 tens
Step-by-step explanation:
the value of the first half of the statement is 83 and the value of the second one is 13 (without the tens) so that mean it has 70 left over to make it 7 tens.