Réponses

2013-06-04T12:52:25+02:00

a)

2m+1=4

2m=4-1

m=3/2

b)

4n-6=24

4n=24+6

4n=30

n=30/4=15/2

c)

9+10t=-45

10t=-45-9

t=-54/10=-27/5

d)

7v-8=-57

7v=-57+8

v=-49/7=-7

2013-06-04T12:55:55+02:00
2m= 4-1
2m = 3
m= 3/2
B) 4m-6 = 24
4m= 24+6
m= 30/4
C) 9+10t= -45
10t = -45 -9
10t= -54
t= -54/10 = -5,4
D) 7v-8=-57
7v= -57 + 8
7v= -48
v= -48/7