Answer:
9=7+a( the answer is a=2
a+8 = b+5
Step-by-step explanation: PLZ MARK BRAINLIEST. For the question " 9=7+a" You need to find the value for "a". So you have to subtract to find out the value of "a" 9-7=2. So a=2
For the second question, we already found out what the answer for "a" is so we can substitute the "a" in " a+8" as "2+8" and the answer for that one is 10. For " b+5" we need a number that equals to the same answer as the previous equation "10". So you can put "5" as a replacement for "b" since "5+5= 10". You can tell that this is an accurate answer since they both have the same answer as the previous equation.
