What could be the first step toward correctly solving the equation 5x+70=-3x-10

Add '-3x' to each side of the equation.

-70 + 5x + - 3x = - 10 + 3x + - 3x

Combine like terms: 5x + - 3x = 2x

-70 + 2x = - 10 + 3x + - 3x

Combine like terms: 3x + - 3x = 0

-70 + 2x = - 10 + 0

-70 + 2x = - 10

Add '70' to each side of the equation.

-70 + 70 + 2x = - 10 + 70

Combine like terms: - 70 + 70 = 0

0 + 2x = - 10 + 70

2x = - 10 + 70

Combine like terms: - 10 + 70 = 60

2x = 60

Divide each side by '2'.

x = 30

Simplifying

x = 30

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