Mister Exam
Other calculators
-
How to use it?
- Equation:
-
Equation x^2+11*x+30=0
-
Equation (-2-4t-1)²+(0+2t-1)²+(2+5t)²=9
-
Equation (|3*x-9|)-(|x+2|)=7
-
Equation 3(x-1)-6=0
- Express {x} in terms of y where:
- 15*x-2*y=14
- -12*x+12*y=8
- -9*x+16*y=-11
- -6*x-2*y=-16
-
Identical expressions
- three (x- one)- six = zero
- 3(x minus 1) minus 6 equally 0
- three (x minus one) minus six equally zero
- 3x-1-6=0
- 3(x-1)-6=O
-
Similar expressions
- 3(x-1)+6=0
- 3(x+1)-6=0
3(x-1)-6=0 equation
The teacher will be very surprised to see your correct solution 😉
The solution
Detail solution
Given the linear equation:
Expand brackets in the left part
Looking for similar summands in the left part:
Move free summands (without x)
from left part to right part, we given:
$$3 x = 9$$
Divide both parts of the equation by 3
We get the answer: x = 3
3*(x-1)-6 = 0
Expand brackets in the left part
3*x-3*1-6 = 0
Looking for similar summands in the left part:
-9 + 3*x = 0
Move free summands (without x)
from left part to right part, we given:
$$3 x = 9$$
Divide both parts of the equation by 3
x = 9 / (3)
We get the answer: x = 3
The graph