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
Respuestas a la pregunta
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