Numerical Expressions
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examples of numerical expressions
1. 3x
+7=
34
-7 -7
3x =27
2. 7x +1 =22
7x +1 -1=22 -1
7x=21
7x/7 =21/7
x=3
3. 3x+ 11= 23
3x +11 -11 =23-11
3x =12
3x/3 =12/3
x=4
4. 2x +3 =43
2x +3=43
2x +3 -3 =43 -3
2x=40
2x/2 =40/2
x=20