3a+5(9)=21

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Solution for 3a+5(9)=21 equation: 


Simplifying
3a + 5(9) = 21

Multiply 5 * 9
3a + 45 = 21

Reorder the terms:
45 + 3a = 21

Solving
45 + 3a = 21

Solving for variable 'a'.

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

Add '-45' to each side of the equation.
45 + -45 + 3a = 21 + -45

Combine like terms: 45 + -45 = 0
0 + 3a = 21 + -45
3a = 21 + -45

Combine like terms: 21 + -45 = -24
3a = -24

Divide each side by '3'.
a = -8

Simplifying
a = -8

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