Explicación paso a paso:
a)
5x + 10 = 2x + 40
5x - 2x = 40 - 10
3x = 30
x = 10
5(10) + 10 = 2(10) + 40
50 + 10 = 20 + 40
60 = 60
b)
4x - 3 = 3x + 2
4x - 3x = 2 + 3
x = 5
4(5) - 3 = 3(5) + 2
20 - 3 = 15 + 2
17 = 17
c)
6x - 6 = 5x + 5
6x - 5x = 5 + 6
x = 11
6(11) - 6 = 5(11) + 5
66 - 6 = 55 + 5
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Explicación paso a paso:
a)
5x + 10 = 2x + 40
5x - 2x = 40 - 10
3x = 30
x = 10
5(10) + 10 = 2(10) + 40
50 + 10 = 20 + 40
60 = 60
b)
4x - 3 = 3x + 2
4x - 3x = 2 + 3
x = 5
4(5) - 3 = 3(5) + 2
20 - 3 = 15 + 2
17 = 17
c)
6x - 6 = 5x + 5
6x - 5x = 5 + 6
x = 11
6(11) - 6 = 5(11) + 5
66 - 6 = 55 + 5
60 = 60