Question

1- ( 3 × + 6 = 12 + 9)
2- (2 × - 1 = 5 × + 8)
3- (2 - × = × - 8)
4- ( 2 × +2 - 3 × + 6 = × - 6

AYUDA!!!!!!!! DOY CORONA LA MEJOR RESPUESTA !!!!! :3​

Answer 1

Explicación paso a paso:

1- ( 3 × + 6 = 12 + 9)

3x + 6 = 21

3x = 21 - 6

3x = 15

x = 15 / 3

x = 5

comprobación

1- ( 3 × + 6 = 12 + 9)

3 * 5 + 6 = 12 + 9

15 + 6 = 21

21 = 21 ✅✅

2- (2 × - 1 = 5 × + 8)

2x - 1 = 5x + 8

2x - 5x = 8 + 1

-3x = 9

x = 9 / -3

x = -3

comprobación

2- (2 × - 1 = 5 × + 8)

2 * - 3 - 1 = 5 * -3 + 8

-6 - 1 = -15 + 8

-7 = -7 ✅✅

3- (2 - × = × - 8)

2 + 8 = x + x

10 = 2x

10/ 2 = x

5 = x

comprobación

(2 - × = × - 8)

2 - 5 = 5 - 8

-3 = -3 ✅✅

4- ( 2 × +2 - 3 × + 6 = × - 6)

2x +3 - 3x + 6 = x - 6

-x +9 = x -6

9 + 6 = x + x

15 = 2x

7.5 = x

comprobación

2 * 7.5 +2 - 3 * 7.5 + 6 = 7.5 - 6

15 + 2 - 22.5 + 6 = 1.5

17 - 22.5 + 6 = 1.5

-5.5 + 6 = 1.5

1.5 = 1.5 ✅✅

espero te sirva :) <3