melanymoreno0905 melanymoreno0905

26-03-2020
Mathematics

contestada

7x-10y=20
10x-10y=-10

Respuesta :

Аноним Аноним

26-03-2020

Step-by-step explanation:

7x-10y=20....eq 1

10x-10y=-10....eq. 2

- + +

Solving both equations

-3x=30

therefore, x=-10

now putting x=-10 in equation 2

-100-10y = -10

-10y=90

therefore y=-9

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