Question

resolva as equações
c) 3x-21=0
d) 6+x=6,4
e) 0,5x-9=1,5
f)4x+3=-19
g) 5x+2=2x-1
h) 6-3x=-10 - 49
i) 2 (3x-5)=1904

Answer 1

c) x = 21/3
x = 7

d) x = 0,4

e) x = 10,5/0,5
x = 21

f) x = -22/4
x = -5.5

g) 5x -2x = -1 -2
3x = -3
x = -1

h) x = -59 +6/3
x = -17.67

i) 6x -10 = 1904
x = 1894/6
x = 315.67