Simplify the expression by combining like terms. 15+12−5+4−7 15 + 12 x – 5 x +

Simplify the expression by combining like terms.
15+12−5+4−7
15
+
12
x
–
5
x
+
4
y
–
7

CLEAR CHECK

11+8
11
x
y
+
8

7+4+8
7
x
+
4
y
+
8

7+4−7
7
x
+
4
y
–
7

15+11−7