Question

equação do 1 grau:

a)2y+y+8=y-3

b)a+7a-2a+9=a+5

c)-x+3x+5+2x-=1-x

d)8y-5y+9=3y+y-1

Answer 1

a)

2y +y + 8 = y - 3

2y + y - y = -3 - 8

2y = -11

y = -11/2

b)

a + 7a -2a + 9 = a + 5

a + 7a - 2a - a = 5 - 9

5a = -4

a = -4/5

c)

-x + 3x + 5 + 2x = 1 - x

-x + 3x + 2x + x = 1 - 5

5x = -4

x = -4/5

d)

8y - 5y + 9 = 3y + y - 1

8y - 5y - 3y - y = - 1 - 9

-y = -10

y = 10

Answer 2

Resposta:

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