ES PARA AHORA,DOY CORONA
a)2x-1=39
b)4 (2x+5)=60
c)x² +5=30
d) (4x+10):2=6x+9
a)2x-1=39
b)4 (2x+5)=60
c)x² +5=30
d) (4x+10):2=6x+9
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Verified answer
Explicación paso a paso:
a)
2x=40
x=20
b)
8x+20=60
8x=40
x=5
c)
x²+5=30
x²=25
x=5
d)
4x+10=(6x+9)2
4x+10=12x+18
-12x+4x=18-10
-8x=8
x=-1