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10x + 19 = 37+ 4x
10x - 4x = 37 - 19
6x = 18
x = 18/6
x = 3 => Respuesta
Verificamos:
10x +15 +4 = 37+ 4x
10(3)+19 = 37+4(3)
30+19 = 37+12
49 = 49
Igualdad verdadera
Espero te ayude
10x-4x=37-15-4
6x=18
x=18/6
x=3 respuesta