Your brother is 1313 your age. your sister is 6 years older than your brother. your sister is 10 years old. write and solve an equation to find your age aa.

There seems to be a typo. You wrote 1313, but I'm assuming you meant to say the fraction 1/3. If this assumption is correct, then continue with the rest of the solution. If the assumption is not correct, then ignore what I wrote below and please provide clarification of what the "1313" should represent. Thank you.

B = your brother's age

S = your sister's age

Y = your age

All of these ages are current present day ages.

"your brother is 1/3 your age" so B = (1/3)Y or B = Y/3.

"Your sister is 6 years older than your brother" so S = B+6

"Your sister is 10 years old" so S = 10.

S = B+6

B+6 = S

B+6 = 10 ... plug in S = 10

B+6-6 = 10-6 ... subtract 6 from both sides

B = 4

Your brother is 4 years old.

B = Y/3

Y/3 = B

Y/3 = 4 plug in B = 4

3(Y/3) = 3*4 ... multiply both sides by 3

Y = 12

note: This answer hinges on assumption that the "1313" should be "1/3".

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,