Substitute the given values of the variables into the equation. write true or false to indicate whether the values make the open sentence true or false. show all work for solving the problem. values: x=7,y=0.2,z=22 2x+0.8/y=z-4

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