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LOANNEGGN
Answered

Bonjour, j'ai des équations à faire mais je ni arrive pas.
a) x - 7 = 10
b) a sur 7 = 6
c) x - 4 = -11
d) t sur 3 = -21
e) 2v - 13 = 34
f) 5x + 31 = 3x
g) 6x - 4 = 3x + 14
h) x sur 3 - 5 = -9
Merci d'avance !

Sagot :

Bonjour,

a) x - 7 = 10

x= 10+7 = 17

b) a / 7 = 6

a = 6=7 = 42

c) x - 4 = -11

x= -11+4 = -7

d) t/ 3 = -21

t= -21 *3 = -63

e) 2v - 13 = 34

2v = 34+13 = 47

v = 47/2 = 23,5

f) 5x + 31 = 3x

5x-3x = -31

2x = -31

x= -31/2 = 15,5

g) 6x - 4 = 3x + 14

6x-3x = 14 +4

3x= 18

x = 18/3 = 6

h) x / 3 - 5 = -9

x/3 = -9+5

x/3 = -4

x= -4*3 = -12

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