if n is your number, then 3n - 5 = 16, ie 3n = 21 ie n = 7.
Yes
To start with, it is not an equation - there is no equality sign. You need 2 independent equations to solve when you have two unknowns, x and y.
h = 63
To solve this equation:set it out as: x-16 = 14add 16 to both sides, so that x is left on its own: x = 16 + 14answer: x = 30
p is less than 12.
If X squared is less than 16, then the absolute value of X is less than the square root of 16. X will be greater than -4 and less than +4.
The equation 7x-12 is less than 4x plus 36 means just what it says7x - 12 less than 4x + 36To solve this, treat it like ordinary algebra and solve for x, replacing the equals sign with the less than sign. Remember that if you multiply or divide by a negative number, then the less than sign flips over and becomes the greater than sign.7x - 12 less than 4x + 367x less than 4x + 487x - 4x less than 483x less than 48x less than 16
if n is your number, then 3n - 5 = 16, ie 3n = 21 ie n = 7.
You don't. There's no question there, and nothing that needs solving. "16 less than x squared" is written as (x2 - 16)
Yes
To start with, it is not an equation - there is no equality sign. You need 2 independent equations to solve when you have two unknowns, x and y.
Mathematical substitution is the process of using one equation to solve for multiple variables. For example: Equation 1: x + y = 4 Equation 2: 2x + y = 16 Using equation 1, solve for y: y = 4 - x <-- Plug this into equation 2. This is substitution because you are replacing y in equation 2 with what y is equal to in equation 1. 2x + y = 16 ----> 2x + (4 - x) = 16 Now you can solve for x: x + 4 = 16; x = 12 You can then substitute the value of x back into the equation that is solved for y: y = 4 - 12; y = -8 Check both equations: Equation 1: -8 + 12 = 4; 4 = 4 (Correct) Equation 2: 2(12) + (-8) = 16; 24 - 8 = 16; 16 = 16 (Correct) We have successfully used substitution to solve for two different variables, x and y.
h = 63
16 cups is one gallon
To solve this equation:set it out as: x-16 = 14add 16 to both sides, so that x is left on its own: x = 16 + 14answer: x = 30
That's not an equation you can solve, since it doesn't have an equal si Assuming you mean: 3x - 4y = 16 For a start, you should replace y with -1. Then solve the resulting equation: 3x - 4(-1) = 16 for x.