Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation (x-3)(x^2-2x+1)=3(x-1)
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Equation z^6+1=0
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Equation (x-4)/(x-6)=2
- Equation 3*80+(n-3)*160
- Express {x} in terms of y where:
- 12*x+11*y=20
- 13*x-18*y=-16
- -18*x-3*y=2
- 5*x+20*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
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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