Question

alguem me ajuda a fazer isso

Answer 1

1)a)x+2=-3

x=-3-2

x=-5

b)x/7=-2

x=(-2)7

x=-14

c)x+1/3=4/3

x=4/3-1/3

x=3/3

x=+1

d)1-2y=7y+8

-2y-7y=8-1

-9y=7(-1)

9y=-7

y=-7/9

e)3-2x=17-4x

-2x+4x=17-3

2x=14

x=14/2

x=+7

f)7x+1=3x+2

7x-3x=2-1

4x=1

x=1/4

g)3(x+2)-1=2(x+3)-7

3x+6-1=2x+6-7

3x-1=2x-7

3x-2x=-7+1

x=-6

h)(1+3x)-(1-2x)+(-11-7x)=5

1+3x-1+2x-11-7x=5

-x-11=5

-x=5+11

-x=16(-1)

x=-16

i)x+3/2- x+2/3=12

3(x+3)-2(x+2)/6=12

3x+9-2x-4/6=12

x+5/6=12

x+5=6(+12)

x+5=72

x=72-5

x=67

j)3y+1/13- 2-y/2=4y-1/5- 2y-5/3

30(3y+1)-195(2-y)/390=78(4y-1)-130(2y-5)/390

30(3y-1)-195(2-y)=78(4y-1)-130(2y-5)

90y-30-390+195y=312y-78-260y+650

285y-420=52y+572

285y-52y=572+420

233y=992

y=992/233

Espero ter ajudado!!!