Question

Resolva (armada) = Equações do 1 grau....

2x -7 = x + 17


5x -3 = 2x +15


19 -4x = 5x +10


x - 7 = -3x +5


x + 2= 14 -x


-2x +1 = 3x -14


3 -4x = 2x + 21


X -2 = 3x + 10


2x -5 = x + 25


3 -4x = 9 -3x


2x -3 = 5


3x -5 = 10




CLASSIFICO COmO mELHOR RESPOSTA

Answer 1

a)2x -7 = x + 17 
2x=x+17+7
2x=x+24
2x−x=24
x=24
b)5x -3 = 2x +15
5x=2x+15+35
x=2x+185x−2x=183x=18x=18/3
x=6
c)19 -4x = 5x +10
19=5x+10+4x
19=9x+10
19−10=9
x9=9x1=
x=1

d)
x - 7 = -3x +5
x=−3x+5+7x=−3x+12x+3x=124x=12x=
12/4
x=3
e)
x + 2= 14 -x
x=14−x−2x=12−x2x=12x=12/2
x=6

f)-2x +1 = 3x -14 
1=3x−14+2x1=5x−141+14=5x15=5x15/5=x3=x
x=3

g)
3 -4x = 2x + 21
−4x=2x+21−3−4x=2x+18−4x−2x=18−6x=18x=-18/6
x=-3

h)
X -2 = 3x + 10 
−2=3x+10−x−2=2x+10−2−10=2x−12=2x-12/2=x
-6=x
x=-6

i)
2x -5 = x + 25
2x=x+25+52x=x+302x−x=30x=30
j)
3 -4x = 9 -3x
−4x=9−3x−3−4
x=−3x+6
-4x+3
x=6

−x=6x=-6

k)2x -3 = 5 
2x=5+3
2x=8
x=8/2
x=4

l)
3x -5 = 10
3x=10+5
3x=15
x=15/3
x=5

Answer 2

2x -7 = x + 17 
2x-x=17-7
x=24

5x -3 = 2x +15 
5x-2x=15+3
3x=18
x=18/3
x=6

19 -4x = 5x +10
19-10=5x+4x
 9=9x
9x=9
x=9/9
x=1

x - 7 = -3x +5 
x+3x=5+7
4x=12
x=12/4
x=3

x + 2= 14 -x
x+x=14-2
2x=12
x=12/2
x=6

-2x +1 = 3x -14 
1+14=3x+2x
15=5x
5x=15
x=15/5
x=3

3 -4x = 2x + 21
3-21=2x+4x
-18=6x
6x=-18
x=-18/6
x=-3

x -2 = 3x + 10 
-2-10=3x-x
-12=2x
2x=-12
x=-12/2
x=-6

2x -5 = x + 25
2x-x=25+5
x=30

3 -4x = 9 -3x
3-9=-3x+4x
-6=x
x=-6

2x -3 = 5 
2x=5+3
2x=8
x=8/2
x=4

3x -5 = 10
3x=10+5
3x=15
x=15/3
x=5

Espero ter ajudado!