Question

equação algebrica

a) -2-2m=4m

b)-3+y=12

c)2x+10=10

d)5x+45=2x-30

e)6y+18=36

f) 22+5y=2y-23

g) M+2=10-M

h)2y+5=12+1

i)5+5y=25

j)6+6M=36

Answer 1

a) -2-2m=4m
4m + 2m = -2
6m = -2
m = -2/6
m = -1/3

b)-3+y=12
y = 12 + 3
y = 15

c)2x+10=10
2x = 10 - 10
2x = 0
x = 0/2
x = 0

d)5x+45=2x-30
5x - 2x = -30 -45
3x = -75
x = -75/3
x = -25

e)6y+18=36
6y = 36 - 18
6y = 18
y = 18/6
y = 3

f) 22+5y=2y-23
5y - 2y = -23 - 22
3y = -45
y = -45/3
y = -15

g) M+2=10-M
M + M = 10 - 2
2M = 8
M = 8/2
M = 4

h)2y+5=12+1
2y = 12+1-5
2y = 8
y = 8/2
y = 4

i)5+5y=25
5y = 25 - 5
5y = 20
y = 20/5
y = 4

j)6+6M=36
6M = 36 - 6
6M = 30
M = 30/6
M = 5