Answer:

Step-by-step explanation:

Answer:
n-7=2
Step-by-step explanation:
We can start with one side, which is: seven less than a number
Since the number is n, seven less than it is n-7
The other side 2, as we can see after the word is
The equation, therefore, is
n-7=2
Yes it can hope it helps you if not sorry
Answer:
number of math problems = 26
number of science problem = 16
Step-by-step explanation:
a total of 42 math and science problems for homework
Let m be the number of math problems and 's' be the number of science problems

You have 10 more math problems than science problems

substitute s+10 for m in the first equation



subtract 10 from both sides

divide both sides by 2




number of math problems = 26
number of science problem = 16
Answer:
it will cost 130
Step-by-step explanation:
10x7=70 12x5=60 60+70=130