Question

@) 2m+6=m b) 2x+1=15 c) 5-x-20=5x-10-7x d) x+6=2-3x completa prfv

Answer 1

a) 2m + 6 =m

2m -m +6=0

m+6=0

m=-6

b) 2x + 1 =15

2x=15-1

2x=14

x=14/2

x=7

c) 5-x-20=5x-10-7x

5-x-20=-2x-10

-15-x=-2x-10

-x+2x=-10+15

-x=-5 (-1)

x=5

d) x+6=2-3x

x+3x=2-6

4x=-4

x=-4/4

x=-1

Se algo estiver errado desculpe.

Só me falar e eu corrijo.

Answer 2

a)
2m+6=m
6=m -b2m
6= - m(-1)
m=-6

B)
2x+1=15
2x=15-1
2x=14
x=14÷2
x=7

C)
5-x-20=5x-10-7x
-x - 15=5x-10-7x
-15+10=5x-7x+x
-5= - x(-1)
x=5

D)
x+6=2-3x
x+3x=2-6
4x=-4
x=-4÷4
x=-1