x+3(7-x)andx+21-3x=

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Solution for x+3(7-x)andx+21-3x= equation:


Simplifying
x + 3(7 + -1x) * andx + 21 + -3x = 0

Reorder the terms for easier multiplication:
x + 3adnx(7 + -1x) + 21 + -3x = 0
x + (7 * 3adnx + -1x * 3adnx) + 21 + -3x = 0
x + (21adnx + -3adnx2) + 21 + -3x = 0

Reorder the terms:
21 + 21adnx + -3adnx2 + x + -3x = 0

Combine like terms: x + -3x = -2x
21 + 21adnx + -3adnx2 + -2x = 0

Solving
21 + 21adnx + -3adnx2 + -2x = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + 21adnx + -3adnx2 + -21 + -2x = 0 + -21

Reorder the terms:
21 + -21 + 21adnx + -3adnx2 + -2x = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 21adnx + -3adnx2 + -2x = 0 + -21
21adnx + -3adnx2 + -2x = 0 + -21

Combine like terms: 0 + -21 = -21
21adnx + -3adnx2 + -2x = -21

Add '2x' to each side of the equation.
21adnx + -3adnx2 + -2x + 2x = -21 + 2x

Combine like terms: -2x + 2x = 0
21adnx + -3adnx2 + 0 = -21 + 2x
21adnx + -3adnx2 = -21 + 2x

Reorder the terms:
21 + 21adnx + -3adnx2 + -2x = -21 + 2x + 21 + -2x

Reorder the terms:
21 + 21adnx + -3adnx2 + -2x = -21 + 21 + 2x + -2x

Combine like terms: -21 + 21 = 0
21 + 21adnx + -3adnx2 + -2x = 0 + 2x + -2x
21 + 21adnx + -3adnx2 + -2x = 2x + -2x

Combine like terms: 2x + -2x = 0
21 + 21adnx + -3adnx2 + -2x = 0

The solution to this equation could not be determined.

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