Question

resolva as equações abaixo:

a) x+2=5
b) 2a+4= -6
c)-2+5y=13
d)2x-3=8
e)10-5x= -6x+8
f)15y-2+3y=7
g)6y-1+2y=7y
h)2x+6=-3x+1
i)4z-z-z=24-12​

Answer 1

a) x+2=5

x=5-2

x=3

b) 2a+4=-6

2a=-6-4

2a=-10

a=-10/2

a=-5

c) -2+5y=13

5y=13+2

5y=15

y=15/5

y=3

d) 2x-3=8

2x=8+3

2x=11

x=11/2

x=5,5

e) 10-5x= -6x+8

-5x+6x=8-10

x=-2

f) 15y-2+3y=7

18y=7+2

18y=9

y=9/18

g) 6y-1+2y=7y

8y-7y=1

y=1

h) 2x+6=-3x+1

2x+3x=1-6

5x=-5

x=-5/5

x=-1

i) 4z-z-z=24-12

2z=12

z=12/2

z=6