yrselftrue83 yrselftrue83

20-04-2020
Chemistry

contestada

(-5)+(+7)-(-4) + (+12)
A 8
B 10
C 18
d 20

Respuesta :

TheGeniusAnswerer TheGeniusAnswerer

20-04-2020

Answer:

C-18

Explanation:

Step one follow order of operations

Add and subtract from left to right(-5)+(7)=2-(-4)+(12)

STEP 2

Apply negative Rule -(-4)=+4=2+4+(12)

then add 2+4+12=18

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