Which expression is equivalent to 0.4 x 8.7 a: (4x87) x (1/100 x 1/10) b: (4x87) x (100 x 10) c: (4x87) x (1/100 x 1/100) d: (4 x 87) x (1/10 x 1/10)

the distance between point a and point b is 6 units

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