7: Six gross of special drawing pencils were purchased for use in a department. If the pencils were used at the rate of 24 a week, the
maximum number of weeks that the 6 gross of pencils would last i

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116

i think the answer is true

step-by-step explanation:

faster, im not sure why but i know it is faster