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A.) TRUE OR FALSE

1. x + 5 = 0 is conditional equation.
2. 2x - 3 = x + 3 + x is a contradiction.
3. y = x^3 + 1 is nonlinear equation.

B.) solve the following with formula

1. the sum of two numbers is 20. if three-fourths of the smaller number is two less than two-thirds of the bigger number, find the smaller number.​​