The left and right page numbers of an open book are two consecutive integers numbers whose sum is 379. find these page numbers.

Left page: 189, right page: 190

Step-by-step explanation:

When you put left page as x, the other page is x+1 because left and right page numbers are not the same but difference of 1.

With these information, you can make equation

Add two x together.

Subtract 1 for each side.

Divide 2 for each side.

So, x was left page but right page was x+1.

Left page is 189 and right page is 189+1, 190.

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