Question

determine x e y para cada uma das igualdades seja verdadeira ​

Answer 1

a)

'(x,y)=(1,2)'

"x= 1"

"y = 2"

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b)

"(7, -1)= (x, -1)"

"x =7"

"y= -1"

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c)

(x,-3)=(-4;y)

"x= -4; y =-3"

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d)

(2x, -7)= (6 ; -7)

2x= 6; 'x =3'

"y= -7"

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e)

(x,y+1)=(9;6)

"x=9"

'y+1=6'

'y=6-1'

"y=5"

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f)

(x+2;y+3)=(8;7)

"x+2=8; 'x = 8-2'

"X = 6 "

"y+3=7;

y=4"

____________

g)

(x+1; y-1)= (-3,-8)

'x+1= -3'

x=-3-1

"x = - 4"

___________

'y-1 =-8'

y= '-8+1'

"y = -7"

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h)

(3x+2,2y-6) = (2x-1; y+2)

"3x+2=2x-1"

"3x-2x=-1-2"

"x = -3"

"2y-6=y+2"

'2y-y= 2+6'

'y = 8'