10+15-what=21

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Solution for 10+15-what=21 equation:


Simplifying
10 + 15 + -1what = 21

Combine like terms: 10 + 15 = 25
25 + -1ahtw = 21

Solving
25 + -1ahtw = 21

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-25' to each side of the equation.
25 + -25 + -1ahtw = 21 + -25

Combine like terms: 25 + -25 = 0
0 + -1ahtw = 21 + -25
-1ahtw = 21 + -25

Combine like terms: 21 + -25 = -4
-1ahtw = -4

Divide each side by '-1htw'.
a = 4h-1t-1w-1

Simplifying
a = 4h-1t-1w-1

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