Write a number in each blank to make the statements true. Six pencils are equal in value to two rulers. One ruler is equal in value to two erasers. Twelve pencils are equal in value to erasers. Two erasers are equal in value to pencils. One ruler and four erasers equal the value of pencils.

P=value of a pencil

r=value of a ruler

e=value of an eraser

6p=2r

r=2e

alrigty

we can divide the fist one by 2

3p=r

so

3p=r=2e

neato

12 pencils is equal to? erasers

3p=2e

times both sides by 4

12p=8e

8 erasers

2 erasers are equal to? pencils

3p=2e

3 pencils

1 ruler and 4 erasers are equal to? pencils

3p=r=2e

r+4e=3p+2 (2e) = 3p+2 (3p) = 3p+6p=9p

9 pencils

Twelve pencils are equal in value to eight erasers

Two erasers are equal in value to three pencils

One ruler and four erasers are equal the value of nine pencils