Mister Exam
Other calculators
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How to use it?
- Equation:
- Equation z3+2*z2+z3-4*z-z2=0
- Equation 2x+9x-5=0
- Equation 30=2(x+4x)
- Equation (x^3+x)^2+2*(x^2+3*x)-120=0
- Express {x} in terms of y where:
- -19*x+7*y=17
- -15*x+17*y=0
- -9*x-15*y=-10
- 7*x-7*y=-13
- Sum of series:
-
30
- Derivative of:
- 30
- 30
-
Identical expressions
- thirty = two (x+4x)
- 30 equally 2(x plus 4x)
- thirty equally two (x plus 4x)
- 30=2x+4x
-
Similar expressions
- 30=2(x-4x)
- (1,4-x)/(4,2*p+x*p)=(k*(7,84+11,2*x+4*x^2)*(4,2+x)*p)/(17,64+8,4*x+x^2)/(1,4-x)
- x+2x+4x=100
- 4x^2+4x+1-8=9-12x+4x^2
- x^2-2x+4x-8-2x+3x^2=0
30=2(x+4x) equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the right part
Looking for similar summands in the right part:
Move free summands (without x)
from left part to right part, we given:
$$0 = 10 x - 30$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-10\right) x = -30$$
Divide both parts of the equation by -10
We get the answer: x = 3
30 = 2*(x+4*x)
Expand brackets in the right part
30 = 2*x+2*4*x
Looking for similar summands in the right part:
30 = 10*x
Move free summands (without x)
from left part to right part, we given:
$$0 = 10 x - 30$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-10\right) x = -30$$
Divide both parts of the equation by -10
x = -30 / (-10)
We get the answer: x = 3