3(21)+7y=70

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Solution for 3(21)+7y=70 equation: 


Simplifying
3(21) + 7y = 70

Multiply 3 * 21
63 + 7y = 70

Solving
63 + 7y = 70

Solving for variable 'y'.

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

Add '-63' to each side of the equation.
63 + -63 + 7y = 70 + -63

Combine like terms: 63 + -63 = 0
0 + 7y = 70 + -63
7y = 70 + -63

Combine like terms: 70 + -63 = 7
7y = 7

Divide each side by '7'.
y = 1

Simplifying
y = 1

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