Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation -4x+9=-19
-
Equation -4x+3=2x
- Equation 3*x^3-27*x=0
- Equation x^0.5+2=0
- Express {x} in terms of y where:
- 19*x-18*y=15
- 13*x-13*y=-4
- 19*x-20*y=-12
- 12*x+7*y=15
- Graphing y =:
- 2*x-20
-
Identical expressions
- seventy -x= two *x- twenty
- 70 minus x equally 2 multiply by x minus 20
- seventy minus x equally two multiply by x minus twenty
- 70-x=2x-20
-
Similar expressions
- x^3+2*x-2^0.5=0
- 70+x=2*x-20
- 70-x=2*x+20
- 0,12x-20=4
70-x=2*x-20 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Move free summands (without x)
from left part to right part, we given:
$$- x = 2 x - 90$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-3\right) x = -90$$
Divide both parts of the equation by -3
We get the answer: x = 30
70-x = 2*x-20
Move free summands (without x)
from left part to right part, we given:
$$- x = 2 x - 90$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-3\right) x = -90$$
Divide both parts of the equation by -3
x = -90 / (-3)
We get the answer: x = 30