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Hello I am having lots off problems with this equation  sad

(-3+2x(7- -5))x(-8-2x(-6+3))

Please help me and write all the equations used...

P.s. I’m in grade 6

Guest Oct 4, 2017
edited by Guest  Oct 4, 2017

Best Answer 

 #3
avatar+7266 
+2

Remember that this isn't called an "equation" since we are not given an equal sign.

This is called an "expression."   smiley

 

(-3 + 2 × (7 - -5) ) × ( -8 - 2 × (-6 + 3) )     First, do the addition inside the innermost parenthesees.

                                                                 7 - -5  =  7 + 5  =  12     and     -6 + 3  =  -3

=  (-3 + 2 × 12 ) × ( -8 - 2 × -3 )

 

=  (-3 + 2 × 12 ) × ( -8 - 2 × -3 )         Next, we must work inside the remaining parenthesees.

                                                          Multiplication comes before addition.

=  (-3 + 24 ) × ( -8 - -6 )

 

=  (-3 + 24 ) × ( -8 - -6 )      Now do the addition inside of the remaining parenthesees.

                                           -3 + 24  =  24 - 3  =  21     and     -8 - -6  =  -8 + 6  =  -2

=  21 × -2

                       Finally, multiply these together.

=  -42

hectictar  Oct 4, 2017
edited by hectictar  Oct 4, 2017
 #1
avatar
0

what do you mean by "equations"?

P.S. Im a middle schooler (7th grade) and this problem is pretty easy to solve for me (no offence)

Guest Oct 4, 2017
 #2
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0

I mean long equations!!

.

.

.

lol

Guest Oct 4, 2017
 #3
avatar+7266 
+2
Best Answer

Remember that this isn't called an "equation" since we are not given an equal sign.

This is called an "expression."   smiley

 

(-3 + 2 × (7 - -5) ) × ( -8 - 2 × (-6 + 3) )     First, do the addition inside the innermost parenthesees.

                                                                 7 - -5  =  7 + 5  =  12     and     -6 + 3  =  -3

=  (-3 + 2 × 12 ) × ( -8 - 2 × -3 )

 

=  (-3 + 2 × 12 ) × ( -8 - 2 × -3 )         Next, we must work inside the remaining parenthesees.

                                                          Multiplication comes before addition.

=  (-3 + 24 ) × ( -8 - -6 )

 

=  (-3 + 24 ) × ( -8 - -6 )      Now do the addition inside of the remaining parenthesees.

                                           -3 + 24  =  24 - 3  =  21     and     -8 - -6  =  -8 + 6  =  -2

=  21 × -2

                       Finally, multiply these together.

=  -42

hectictar  Oct 4, 2017
edited by hectictar  Oct 4, 2017
 #4
avatar
+1

Thank you!

Guest Oct 4, 2017

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