Question

Dê a conjunto de cada equação de primeiro grau.
A)2×+20=60
B)5×-10=40
C)4×-2=26
D)6×+10=46
E)5×+5=50
F)9×+9=82

Answer 1

A)2x+20=60 2x=40 x=40/2 x=20 B)5x-10=40 2x=60-20 5x=50 x=50/5 C)4x-2=26 4x=28 x=28/4 x=7 D)6x+10=46 6x=36 x=36/6 x=6 E)5x+5=50 5x=45 x=45/5 x=9 F)9x+9=82 9x=73 x=73/9 x=8,111..