Respuesta:
5
7
22
Explicación paso a paso:
x + 2x - 7 = 8
3x - 7 = 8
3x = 15
x = 5
1) pastel: x
helado: x + 10
x + 10 + x = 24
2x + 10 = 24
2x = 14
x = 7
el helado costó 17
2) x + 12 = 2x - 10
22 = x
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Verified answer
Respuesta:
5
7
22
Explicación paso a paso:
x + 2x - 7 = 8
3x - 7 = 8
3x = 15
x = 5
1) pastel: x
helado: x + 10
x + 10 + x = 24
2x + 10 = 24
2x = 14
x = 7
el helado costó 17
2) x + 12 = 2x - 10
22 = x