Given the equation 2x+1 =3, solve for x amd identify if its an extraneous solution.

x=1, and x is not extraneous

Step-by-step explanation:

First you must solve for x. By using inverse operations, you must isolate x. When using inverse operations, you should do the addition and subtraction first, so you subtract 1 from both sides. This leaves you with 2x=2. 3 has become 2 because you subtracted 1 from it, and because you have to subtract 1 from both sides. Now you need to divide both sides by 2. This leaves you with x=1. To determine whether or not this is extraneous, we must plug x=1 back into the equation. This leaves us with 2(1)+1=3. By using the order of operations, we multiply first and then add. We first multiply 2 and 1, giving us 2. We have 2+1=3. We now add 2+1, giving us 3. Since 3=3, x is not extraneous.

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

step-by-step explanation:

i'm pretty sure it would take 20 hours because it's half the men so you multiply the number of hours it takes by 2