Question

Responde los siguientes ejercicios.
a) 2x+28 = 178
b) 25+7x = 118
c) 3x+2x+25 = 150
d) 5x +28 = 2x - 55
e) 2x+ 25 = -3x + 175
f) 10x + 170 = -170 -9x
g) 120x + 75 + 25 = 110 x
h) 2x+ 25 = 125 - 4x
i) 3a + 25 = 25 - 60
j) 4a + 25 = 6a - 75

Answer 1

A).

2x+28=178

2x=178-28

2x=150

X=150/2

X=75

B).

25+7x=118

7x=118-25

7x=93

X=93/7

X=13.28

C.

3x+2x+25=150

5x=150-25

X=125/5

X=25

D.

5x+28=2x-55

5x-2x=-55-28

3x=83

X=83/3

X=-27.6

E.

2x+25=-3x+175

2x+3x=175-25

5x=150

X=150/5

X=30

F.

10x+170=-170-9x

10x+9x=-170-170

19x=-340

X=-340/19

X=17.89

G.

120x+75+25=110x

100=110x-120x

100=10x

X=100/10

X=10

H.

2x+25=125-4x

6x=100

X=100/6

X=16.6

I.

3a+25=25-60

3a=-35-25

3a=-60

A=-60/3

A=-20

J.

4a+25=6a-75

-2a=-75-25

-2a=-100

A=-100/-2

A=50

Uff men