exam Maths Puzzle Numerical Ability

Determine whether the given number is a solution of the given equation.
1. 35; t+17= 53
2. 36; a-19= 17

Solve using the addition principle.
1. z+9=14

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exam Other Question

Solve for x: {(3^x9^x+20)/(27^2x+5)}=81^x+5 I submitted my question earlier, but need to have an answer in the next 20 minutes. My question is as follows, and is not out of textbook: What are the intercepts and coordinates of x,y, and the domain from the equation f(x) = 4x^5 +3x^4 - 2x^2 + 7?