Which sentence demonstrates the multiplicative identity? 1/2 · 1 = 1/2
1/2 · 2 = 1
1/2 + 0 = 1/2 ·

1/2*1 =1/2

Step-by-step explanation:

because they both give the same value

for example a*b=b*a

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 have no idea just need points sorry

step-by-step explanation: