a+b+c+d+90+80=100

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Solution for a+b+c+d+90+80=100 equation:


Simplifying
a + b + c + d + 90 + 80 = 100

Reorder the terms:
90 + 80 + a + b + c + d = 100

Combine like terms: 90 + 80 = 170
170 + a + b + c + d = 100

Solving
170 + a + b + c + d = 100

Solving for variable 'a'.

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

Add '-170' to each side of the equation.
170 + a + b + c + -170 + d = 100 + -170

Reorder the terms:
170 + -170 + a + b + c + d = 100 + -170

Combine like terms: 170 + -170 = 0
0 + a + b + c + d = 100 + -170
a + b + c + d = 100 + -170

Combine like terms: 100 + -170 = -70
a + b + c + d = -70

Add '-1b' to each side of the equation.
a + b + c + -1b + d = -70 + -1b

Reorder the terms:
a + b + -1b + c + d = -70 + -1b

Combine like terms: b + -1b = 0
a + 0 + c + d = -70 + -1b
a + c + d = -70 + -1b

Add '-1c' to each side of the equation.
a + c + -1c + d = -70 + -1b + -1c

Combine like terms: c + -1c = 0
a + 0 + d = -70 + -1b + -1c
a + d = -70 + -1b + -1c

Add '-1d' to each side of the equation.
a + d + -1d = -70 + -1b + -1c + -1d

Combine like terms: d + -1d = 0
a + 0 = -70 + -1b + -1c + -1d
a = -70 + -1b + -1c + -1d

Simplifying
a = -70 + -1b + -1c + -1d

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