Respuesta:
a) 5
b) 15
c) 48
d) 15
Explicación paso a paso:
a) 2x+20 = 30
2x = 30 - 20
2x = 10
x = 10 ÷ 2
x = 5
b) x+60 = 5x
5x = 60+x
5x-x= 60
4 x = 60
x = 60 ÷ 4
x = 15
c) x+½x = 72
3/2x = 72
x = 72( 3/2 )
x = 48
d). 2x-5 = x+10
2x-x = 10+5
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Respuesta:
a) 5
b) 15
c) 48
d) 15
Explicación paso a paso:
a) 2x+20 = 30
2x = 30 - 20
2x = 10
x = 10 ÷ 2
x = 5
b) x+60 = 5x
5x = 60+x
5x-x= 60
4 x = 60
x = 60 ÷ 4
x = 15
c) x+½x = 72
3/2x = 72
x = 72( 3/2 )
x = 48
d). 2x-5 = x+10
2x-x = 10+5
x = 15