8(21)+7y=70

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Solution for 8(21)+7y=70 equation: 


Simplifying
8(21) + 7y = 70

Multiply 8 * 21
168 + 7y = 70

Solving
168 + 7y = 70

Solving for variable 'y'.

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

Add '-168' to each side of the equation.
168 + -168 + 7y = 70 + -168

Combine like terms: 168 + -168 = 0
0 + 7y = 70 + -168
7y = 70 + -168

Combine like terms: 70 + -168 = -98
7y = -98

Divide each side by '7'.
y = -14

Simplifying
y = -14

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