Question

1- Resolva as equações sendo U=Q.

a) X + 289 = 987
b) X - 785 = 1.976
c) 12X + 385 = 946
d) 18X - 583 = 649
e) 2 ( 3 X + 7) = 247
f) 3 ( 2 X - 6) = 742

Answer 1

A) X+289=987
X=698
B) X - 785 = 1.976
X=2761
C) 12X + 385 = 946 
12X=561
X=561/12
D)18X-583=649
18X=1232
X=1232/18
E)2(3X+7)=247
6X+14=247
6X=233
X=233/6
F)3(2X-6)=742
6X-18=742
6X=760
X=760/6
X380/3