7=3a+2(5a-3)

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Solution for 7=3a+2(5a-3) equation:


Simplifying
7 = 3a + 2(5a + -3)

Reorder the terms:
7 = 3a + 2(-3 + 5a)
7 = 3a + (-3 * 2 + 5a * 2)
7 = 3a + (-6 + 10a)

Reorder the terms:
7 = -6 + 3a + 10a

Combine like terms: 3a + 10a = 13a
7 = -6 + 13a

Solving
7 = -6 + 13a

Solving for variable 'a'.

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

Add '-13a' to each side of the equation.
7 + -13a = -6 + 13a + -13a

Combine like terms: 13a + -13a = 0
7 + -13a = -6 + 0
7 + -13a = -6

Add '-7' to each side of the equation.
7 + -7 + -13a = -6 + -7

Combine like terms: 7 + -7 = 0
0 + -13a = -6 + -7
-13a = -6 + -7

Combine like terms: -6 + -7 = -13
-13a = -13

Divide each side by '-13'.
a = 1

Simplifying
a = 1

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