Question

equações do 1°grau
b) 3×+6+5=×+12
c) 5×-17=8
d) 2×+4=28
e) 3×-7=2×+1
f) 4×-1=×+11
g) 2+5×=2×+10
h) 4×-2+1=×+1

Answer 1

b) 3x-x=12-6-5 => 2x=12-11 => x=1/2

c) 5x=8+17 => x=25/5 => x=5

d) 2x=28-4 => x=24/2 => x=12

e) 3x-2x=1+7 => x=8

f) 4x-x=11+1 => 3x=12 = x=12/3 x=4

g) 5x-2x= 10-2 => 3x=8 => x=8/3

h) 4x-x=1+2-1 => 3x=2 => x=2/3