HOLA ALGUIEN ME PUEDE AYUDAR A RESOLVER ESTAS ECUACIONES XFAVOR. CON SU COMPROBACION XFAVOR ES MUY URGENTE! 1) 3x + 12 = 30 2) 5x - 20 = 30 3) 10x + 2 = 30 - 4x 4) 2x + 10 = 26 5) 10x - 8 = 80 6) 5x + 18 = 40 7) 2x + 3 = 9 8) 4x - 2 = 20.
3x + 12 = 30
3x = 30 - 12
3x = 18
x = 18 / 3
x = 6
5x - 20 = 30
5x = 30
x = 30 / 5
x = 6
10x + 2 = 30 - 4x
10x + 4x = 30 - 2
14x = 28
x = 28 / 14
x = 2
2x + 10 = 26
2x = 26 - 10
2x = 16
x = 16 / 2
x = 8
10x - 8 = 80
10x = 80 + 8
10x = 88
x = 88 / 10
x = 44 / 5
5x + 18 = 40
5x = 40 - 18
5x = 22
x = 22 / 5
2x + 3 = 9
2x = 9 - 3
2x = 6
x = 6 / 2
x = 3
4x - 2 = 20
4x = 20 + 2
4x = 22
x = 22 / 4
x = 11 / 2.
1) 3x + 12 = 30 3x = 18 x = 6
comprobación 3x + 12 = 30
3 (6) + 12 = 30
18 + 12 = 30
30 = 30
2) 5x - 20 = 30
5x = 50
x = 10
comprobación
5x - 20 = 30
5 (10) - 20 = 30
50 - 20 = 30
30 = 30
3) 10x + 2 = 30 - 4x
10x + 4x = 30 - 2
14x = 28
x = 2
comprobación
10x + 2 = 30 - 4x
10 (2) + 2 = 30 - 4 (2)
22 = 22
4) 2x + 10 = 26
2x = 16
x = 8
comprobación
2x + 10 = 26
2 (8) + 10 = 26
26 = 26
5) 10x - 8 = 80
10x = 88
x = 8, 8
comprobación
10x - 8 = 88
10(8, 8) - 8 = 88
88 = 88
6) 5x + 18 = 40
5x = 22
x = 4, 4
comprobación
5x + 18 = 40
5 (4, 4) + 18 = 40
40 = 40
7) 2x + 3 = 9
2x = 6
x = 3
comprobación
2x + 3 = 9
2 (3) + 3 = 9
9 = 9
8) 4x - 2 = 20
4x = 22
x = 5, 5
comprobación
4x - 2 = 20
4 (5, 5) - 2 = 20
20 = 20.