We can solve this by following the steps I'm about to explain.
1) Write the equation out.
• 4x + 1 = 2x - 3
2) Get the numbers and variables to their own side.
• 4x + 1 = 2x - 3
• 4x + 1 - 1 = 2x - 3 - 1
• 4x = 2x - 4
• 4x - 2x = 2x - 2x - 4
• 2x = -4
3) Perform the opposite operation that is holding the variable together. (2x = 2(x) so we're multiplying - we need to divide)
• 2x = -4
• 2x/2 = -4/2
• x = -2
4) Check your solution
• 4x + 1 = 2x - 3
Substitute the value of X for every x in the equation.
• 4(-2) + 1 = 2(-2) - 3
• -8 + 1 = -4 - 3
• -7 = -7
Chat with our AI personalities
It is no tpossible to find the square root of an unknown number. You can, however, represent it as x0.5 or √x so that the value of the square root can be evaluated when the value of x is known.
f(71.19) = 71 where int(x) is the integer value of a number
You cannot because the expression still contains the unknown variable y.
One, two, three, four...doesn't take long to get to it...
If you mean... -7+x*2=23 then x = 15. Done without the aid of a calculator ! The value of 'x' (the unknown number) MUST equal 30, because 30-7=23 - SO, half the unknown number must be 15!