Respuesta:
1 = 10
2 = 13
3 = 43
4 = 24
5 = 60
Explicación paso a paso:
1) 4x+2=7
6
4x = (7 • 6) - 2
x = 40 = 10
4
2) x+3=8
2
x = (8 • 2) - 3
× = 13
3) 3(x-8) = 21
5
3x - 24 = 21 • 5
3x = 105 + 24
x = 129 = 43
3
4) x + x = 20
2 3
3x + 2x = 20
3x + 2x = 20 • 6
5x = 120
x = 120 = 24
5) 2x - x = 9
5 4
8x - 5x = 9
20
8x - 5x = 9 • 20
3x = 180
x = 180 = 60
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Verified answer
Respuesta:
1 = 10
2 = 13
3 = 43
4 = 24
5 = 60
Explicación paso a paso:
1) 4x+2=7
6
4x = (7 • 6) - 2
x = 40 = 10
4
2) x+3=8
2
x = (8 • 2) - 3
× = 13
3) 3(x-8) = 21
5
3x - 24 = 21 • 5
3x = 105 + 24
x = 129 = 43
3
4) x + x = 20
2 3
3x + 2x = 20
6
3x + 2x = 20 • 6
5x = 120
x = 120 = 24
5
5) 2x - x = 9
5 4
8x - 5x = 9
20
8x - 5x = 9 • 20
3x = 180
x = 180 = 60
3