z + 8 - 2 is an expression, not an equation. An expression cannot be solved. At best, you can simplify it to z + 6.
z=.3
Without an equality sign and not knowing the plus or minus value of 81 it can't be solved. If you mean: z+81 = 9z-7 Then: z-9z = -7-81 => -8z = -88 By dividing both sides by -8: z = 11
z = -4 x-5 y+2
143542make the variables X plus Y plus Zthe solution is X*Y,X*Z, then (X+Z)*Y flipped7*2=147*5=35(7+5)*2=24 flipped =421435425*3=155*2=10(5+2)*3=21...flipped =12151012
z + 8 - 2 is an expression, not an equation. An expression cannot be solved. At best, you can simplify it to z + 6.
10
7 (seven)
6+z = 3 z = 3-6 z = -3
13y+3z+8
e2x + 2ex = 8. First, let's define z to be ex Substituting gives us the following quadratic equation:z2+2z=8 or z2+2z-8=0Solving for z gives us two possible zs: 2 and minus 4.As z is a power of e, only z=2 makes sense.Back solving we get:ex = 2and the answer is x=ln(2). If you substitute in the answer, you get e2ln2+2eln2=8, or 4+4=8. ln(2) ~= 0.69315.
z + 8 Replace words with their mathematical equivalent. Leaves variables and numbers as is. Plus means add, so z plus 8 becomes z + 8.
What are we solving here for, Z, X, or Y?If solve for Z then the answer would be z = x + yIf solve for X then the answer would be z = z - yIf solve for Y than the answer would y = z - xHope this help.
To solve an equation with three unknowns, x, y and z, you require 3 independent equations.
you can not solve this equation
z=.3
Set up the equation and solve for z: 28 + z = 56 (next, subtract 28 from each side of the equaition to solve) z = 28