Kate is three years older than her sister. In two years Kate will be twice older. How old is Kate's sister now?

Kate's sister is 5

Step-by-step explanation:

(k = kate's age)

(s = sister's age)

k = s + 3

k + 2 = 2s

Rearrange k + 2 = 2s into and plug it into the first equation

k = 2s - 2

2s - 2 = s + 3

2s - s = 3 + 2

s = 5

fa tha first one you gonna add y to both sides

it look like this

x-y+y=6+y

x=y+6

therefore your answer is

x =y+6

fa tha second one

you gonna flip tha equation

it gonna look like x-4y=y

then add 4 to both sides

it gonna look like tha

x-4 +4 =y +4

so therefore tha answer is x=y+4

step-by-step explanation:

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents