lidiahernandez1314 lidiahernandez1314

06-11-2019
Mathematics

contestada

3w-4z=8
2w+3z+-6
can anyone help me please

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sallynguyen0721 sallynguyen0721

06-11-2019

Replace all occurrences of + − with a single −. A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because 1.− 1 = −1

3w- 4z= 8, 2w+3z -6

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