Lisa tapes three 7- inch by 9-inch pieces of construction paper together to make a happy birthday sign for her mom she uses a piece of ribbon that is 144 inches long to make a border around the outside edges of the sign. how much ribbon is leftover

they can both be solutions depends on the equation

step-by-step explanation:

what is the equation? ?

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