Question

resolva as equacoes sendo U=Q. a) 2 x - 8 =8
b) 3 x + 1 =19
c) 7 y - 4 =10
d) 2 x + 1 =-8
e) 9 x - 15 =4x15

responda pfv....

Answer 1

a) 2x - 8=8
 2x=8+8
2x=16
x=16/8
x=2

b)3x+1=19
3x=19-1
x=18/3
x=6

c)7y - 4=10
7y=10+4
y=14/7
y= 2

d)2x+1= -8
2x=-8-1
2x=-9
x= -9/2 ou -4,5

e) 9x-15=4 . 15
9x=+15 + 60
9x=75
x=75/9 ou 8,33