Question

problema 1: 8×+4=7×+9

problema 2: 3(6×+7) = 2(× -3)

problema 3: 9× -5 = 3×+5
____ ____
2. 2

problema 4: 3× -2 +5 = 5×+8
(Y el procedimiento)



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Answer 1

Respuesta:

.

Explicación paso a paso:

Problema 1:

8x + 4 = 7x + 9

8x - 7x = 9 - 4

x = 5

Problema 2:

3( 6x + 7 ) = 2(x - 3)

18x + 21 = 2x - 6

18x - 2x = -21 - 6

16x = -27

x = -27 / 16

Problema 3:

9x - 5 = 3x + 5

9x - 3x = 5 + 5

6x = 10

x = 10 / 6

x = 5 / 3

Problema 4:

3x - 2 + 5 = 5x + 8

3x + 3 = 5x + 8

3 - 8 = 5x - 3x

-5 = 2x

-5/2 = x