Mister Exam
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How to use it?
- Equation:
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Equation x²-6x+5=0
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Equation (5+7*a)*15=-30
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Equation 2*x^2-3*x+5=0
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Equation -5x+12=-3x+8
- Express {x} in terms of y where:
- 1*x-17*y=1
- 20*x-19*y=-17
- -14*x-12*y=-9
- -3*x-7*y=-17
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Identical expressions
- (five + seven *a)* fifteen =- thirty
- (5 plus 7 multiply by a) multiply by 15 equally minus 30
- (five plus seven multiply by a) multiply by fifteen equally minus thirty
- (5+7a)15=-30
- 5+7a15=-30
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Similar expressions
- (5-7*a)*15=-30
- (5+7*a)*15=+30
- 5+7a*15=-30
- (5+7a)*15=-30
(5+7*a)*15=-30 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
Move free summands (without a)
from left part to right part, we given:
$$105 a = -105$$
Divide both parts of the equation by 105
We get the answer: a = -1
(5+7*a)*15 = -30
Expand brackets in the left part
5*15+7*a*15 = -30
Move free summands (without a)
from left part to right part, we given:
$$105 a = -105$$
Divide both parts of the equation by 105
a = -105 / (105)
We get the answer: a = -1
The graph