Need help yet again with maths homework

5

Step-by-step explanation:

7 + 2 = 9

2 = a

2 + 8 = 10

10 - 5 = 5

5 = b

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.

answer: the answer is 35%

the solution is the point

step-by-step explanation:

we have

> equation a

> equation b

adds equation a and equation b

substitute the value of x in equation b to find the value of y

the solution is the point