4. Writing to Explain A marching band practices 5 h for every 30 min they perform. What fraction of their playing time is spent performing? Draw a picture
to solve. Explain how to use your picture to find how many hours the band
performs if they play 22 hours. Solve the problem as part of your explanation.
HINT: YOU CAN DOUBLE THE TIME SPENT ON EACH ACTIVITY TO SOLVE.

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

answer4 to the second power is 16

and 4 to the third power is 64,

inverse operation of addition