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Simplifying
20 + -4.9x2 = 15
Solving
20 + -4.9x2 = 15
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-20' to each side of the equation.
20 + -20 + -4.9x2 = 15 + -20
Combine like terms: 20 + -20 = 0
0 + -4.9x2 = 15 + -20
-4.9x2 = 15 + -20
Combine like terms: 15 + -20 = -5
-4.9x2 = -5
Divide each side by '-4.9'.
x2 = 1.020408163
Simplifying
x2 = 1.020408163
Take the square root of each side:
x = {-1.010152544, 1.010152544}
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