Bonjour,
Pourriez vous m'aider pour cette exercice de maths ?
a) 3x + 7 = x + 2
b) 2+ 2y = -1 + 3y
c) 4- 5a = 2a - 1
d) t- 4 = -3t - 10
Pourriez vous m'aider pour cette exercice de maths ?
a) 3x + 7 = x + 2
b) 2+ 2y = -1 + 3y
c) 4- 5a = 2a - 1
d) t- 4 = -3t - 10
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Verified answer
a) 3x + 7 = x + 23x - x = 2 - 7
2x = - 5
x = - 5/2
x = - 2,5
b) 2+ 2y = -1 + 3y
2y - 3y = - 1 - 2
- y = - 3
y = 3
c) 4- 5a = 2a - 1
- 5a - 2a = - 1 - 4
- 7a = - 5
a = 7/5
a = 1,4
d) t- 4 = -3t - 10
t + 3t = - 10 + 4
4t = - 6
t = - 6/4
t = - 3/2
t = - 1,5
3x-x = 2-7
2x = -5
x = -5/2
b) 2+ 2y = -1 + 3y
2y-3y = -1-2
-y = -3
y = 3
c) 4- 5a = 2a - 1
-5a-2a = -1-4
-7a = -5
a = -5/-7
a = 5/7
d) t- 4 = -3t - 10
t+3t = -10+4
4t = -6
t = -6/4
t = -3/2