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Mathematics
Problem
Which one of the following equations is NOT equivalent to
5
x
+
4
=
19
5x + 4 = 19
5
x
+
4
=
19
? a)
15
x
+
12
=
57
15x + 12 = 57
15
x
+
12
=
57
b)
x
=
3
x = 3
x
=
3
c)
6
x
+
4
=
20
6x + 4 = 20
6
x
+
4
=
20
d)
5
x
=
19
−
4
5x = 19 - 4
5
x
=
19
−
4
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