Question

The units digit of a two-digit exceeds twice the tens digit by 3. The sum of the digits is 6. Find the number

Answer 1

51

Explanation:

y is the ten digit

and x the ones digit

y+x=6 -> x=6-y subtracted each side by y

2y+3=x

2y+3=6-y they both equal x so the equal each other

add y to both side to get rid of the y

minus 3 form both side to get rid of the 3

3y=3

y=1

plug it in

2(1)+3=x

5=x

51