Question

[13 + (– 12)] + (............) = 13 + [(–12) + (–7)] Fill in the blank.

Answer 1

blank will be (-7)..........

Answer 2

Answer:

Value at blank space is -7.

$[13 + (-12)] + (.....) = 13 + [(-12) + (-7)]$

Step-by-step explanation:

Finding value to be filled in the blank be x. (Let's say)

In BODMAS while calculating we first solve

simple braces ()

then

square braces[]

then simplify our equations.

Then equation will become,

$[13 + (-12) ] + x = 13 + [(-12) + (-7)]$

Solving brackets, and simplifying equation

$[13 - 12] + x = 13 + [-12 -7]$

Now again solving square braces and simplifying

$1 + x = 13 + (-19)$

Calculating for x in the above equation as follows:

$1 + x = 13 -19\\1 + x = -6\\x = -6 -1\\x = -7$

Hence we have value which is to be filled in blank space.

$[13 + (-12)] + (x) = 13 + [(-12) + 9-7)]$

put x = -7