10(7a-2)+9(a-2)=

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Solution for 10(7a-2)+9(a-2)= equation:


Simplifying
10(7a + -2) + 9(a + -2) = 0

Reorder the terms:
10(-2 + 7a) + 9(a + -2) = 0
(-2 * 10 + 7a * 10) + 9(a + -2) = 0
(-20 + 70a) + 9(a + -2) = 0

Reorder the terms:
-20 + 70a + 9(-2 + a) = 0
-20 + 70a + (-2 * 9 + a * 9) = 0
-20 + 70a + (-18 + 9a) = 0

Reorder the terms:
-20 + -18 + 70a + 9a = 0

Combine like terms: -20 + -18 = -38
-38 + 70a + 9a = 0

Combine like terms: 70a + 9a = 79a
-38 + 79a = 0

Solving
-38 + 79a = 0

Solving for variable 'a'.

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

Add '38' to each side of the equation.
-38 + 38 + 79a = 0 + 38

Combine like terms: -38 + 38 = 0
0 + 79a = 0 + 38
79a = 0 + 38

Combine like terms: 0 + 38 = 38
79a = 38

Divide each side by '79'.
a = 0.4810126582

Simplifying
a = 0.4810126582

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