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ahrayia [7]
3 years ago
8

What does this equal? -1/5a+21=23​

Mathematics
2 answers:
Neko [114]3 years ago
4 0

Supposing you want this equation to be solved for a: we start with

-\dfrac{a}{5}+21=23

Subtract 21 from both sides:

-\dfrac{a}{5}=2

Multiply both sides by 5:

-a=10

Change sign to both sides:

a=-10

Alla [95]3 years ago
3 0
First substitute 21 to the right side
Then,
-1/5a=23-21
-1/5a=2
Now,take -1/5 to the other side
a=2(-5)
a=-10
Therefore,a should be substituted by -10 to make them equal.
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