Mister Exam
Other calculators
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How to use it?
- Equation:
-
Equation 5*x^2+25*x=0
-
Equation 4*x=0
-
Equation 5x^2+4x-1=0
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Equation 5(x-4)=3x-10
- Express {x} in terms of y where:
- -1*x-20*y=1
- -3*x-1*y=-9
- -19*x+10*y=-3
- 16*x+11*y=4
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Identical expressions
- three * eighty +(n- three)* one hundred and sixty
- 3 multiply by 80 plus (n minus 3) multiply by 160
- three multiply by eighty plus (n minus three) multiply by one hundred and sixty
- 380+(n-3)160
- 380+n-3160
-
Similar expressions
- 3*80+(n+3)*160
- 3*80-(n-3)*160
3*80+(n-3)*160 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 n)
from left part to right part, we given:
$$160 n = 240$$
Divide both parts of the equation by 160
We get the answer: n = 3/2
3*80+(n-3)*160 = 0
Expand brackets in the left part
3*80+n*160-3*160 = 0
Looking for similar summands in the left part:
-240 + 160*n = 0
Move free summands (without n)
from left part to right part, we given:
$$160 n = 240$$
Divide both parts of the equation by 160
n = 240 / (160)
We get the answer: n = 3/2
Sum and product of roots
[src]
sum
3/2
$$\frac{3}{2}$$
=
3/2
$$\frac{3}{2}$$
product
3/2
$$\frac{3}{2}$$
=
3/2
$$\frac{3}{2}$$
3/2