Using the order of operations, what should be done first to evaluate 6+(-5-7) -83()? Subtract 7 from -5.
Multiply 8 and 3.
Divide 7 by 2.
Add 6 and -5.

don't know sorry bru

step-by-step explanation:

see explanation

step-by-step explanation:

a

(6r + 7) + (13 + 7r) ( remove brackets and collect like terms )

= 6r + 7 + 13 + 7r

= 13r + 20

b

remove brackets and collect like terms

13 - r - 1 + r

= 12 - r

c

remove brackets and collect like terms

= - 8 - r + 2r - 4

= - 12 + r

d

remove brackets and collect like terms

= 7r - - - 6r

[-   - = - - = - ]

= r -

2, 2, 2 or -4, 20, 29

step-by-step explanation:

there is two ways you can do it.

substitute,

circle 1 = 5

circle 2 = 20

circle 3 = 44

in this case no matter how you add, you will always get a perfect square..

hence proved

happy to

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