Answer:
Step-by-step explanation:
So you should use headphones while doing writing work and if digital work then take very short brakes during study and concentrate fully.
-13-4x=x+7
+13 +13
-4x=x+20
-x -x
-5x=20
/-5 /-5
x=-4
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hope it helps
x = 4
A = hb/2
4 = 2(x)/2
4 = x
