Bonjour,
a. 2x + 1 = 2
2x = 2 - 1
2x = 1
x = 1/2
b. x - 1 = 3 - 4x
x + 4x = 3 + 1
5x = 4
x = 4/5
c. x + 2 = - 7
x = - 7 - 2
x = - 9
d. √(x - 4)² = 7
x - 4 = 7
x = 7 + 4
x = 11.
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Bonjour,
a. 2x + 1 = 2
2x = 2 - 1
2x = 1
x = 1/2
b. x - 1 = 3 - 4x
x + 4x = 3 + 1
5x = 4
x = 4/5
c. x + 2 = - 7
x = - 7 - 2
x = - 9
d. √(x - 4)² = 7
x - 4 = 7
x = 7 + 4
x = 11.