find the value of the unknown variable of z+7=20
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Answered by
2
z + 7 = 20
z = 20 - 7
(+ signs changes to - when the number is taken to other side and vice-versa)
z = 13
Answered by
2
Answer:
13
Step-by-step explanation:
given z+7=20
z= 20-7.
= 13 ans...
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