Question

NECESITO AYUDA POR FAVOR (ಥ_ಥ)​

Answer 1

Explicación paso a paso:

(7) 3X+5Y= 28 (7)----------21X+35Y= 196

(-3) 7X-3Y= 36 (-3)---- + -21X+9Y= -108

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44Y= 88

Y=88/44= 2

3X+5(2)= 28

3X+10=28

3X= 28-10

X= 18/3= 6

Prueba:

3(6)+5(2)= 28

18+10= 28

28= 28

(-2) 2m+7n= 44(-2) ----- -4m-14n= -88

4m-5n= 50----------------+ 4m-5n= 50

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-19n= -38

n= -38/-19= 2

2m+7(2)= 44

2m+14= 44

2m = 44-14

m= 30/2= 15

Prueba:

2(15)+7(2)= 44

30+14= 44

44= 44

(3) 5b+7d= 29 (3).-------- 15b+21d= 87

(-5) 3b-8d= 54 (-5)------+ -15b+40d= -270

-----------------------

61d= -183

d= -183/61= -3

5b+7(-3)= 29

5b-21= 29

5b= 29+21

5b= 50

b= 50/5= 10

prueba:

5(10)+7(-3)=29

50-21= 29

29= 29

(2) 4g+3w= 32(2) -------- 8g+6w= 64

(3) 5g-2w= 17 (3)--------+ 15g-6w= 51

-------------------

23g= 115

g= 115/23= 5

5(5)-2w= 17

25-2w= 17

-2w= 17-25

w= -8/-2= 4

prueba:

5(5)-2(4)= 17

25-8= 17

17= 17