Question

Ache a raiz da equação:

a) 1-3×=17-4×
b) 3-2×=17-4×
c) ×-1=7-2×
d) ×+1+2×=1-3×
e) 2×+11=×
f) 3×+1=2×
g) 1+2×=3-5×

Answer 1

a) 1-3×=17-4×
-3x+4x= 17-1
x= 16

b) 3-2×=17-4×
-2x+4x=+17-3
2x=14
x=7

c) ×-1=7-2×
x+2x=7+1
3x=8
x=8/3

d) ×+1+2×=1-3×
x+2x+3x=1-1
x=0

e) 2×+11=×
x=-11

f) 3×+1=2×
3x-2x=-1
x= - 1

g) 1+2×=3-5×
2x+5x=3-1
7x=2
x=2/7