Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation 5*x^2+25*x=0
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Equation -2x+16=5x+30
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Equation y^2-16=0
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Equation -4*(-z+7)=z+17
- Express {x} in terms of y where:
- -4*x-12*y=13
- 16*x+14*y=-14
- 11*x-15*y=3
- 3*x-14*y=-2
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Identical expressions
- - four *(-z+ seven)=z+ seventeen
- minus 4 multiply by ( minus z plus 7) equally z plus 17
- minus four multiply by ( minus z plus seven) equally z plus seventeen
- -4(-z+7)=z+17
- -4-z+7=z+17
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Similar expressions
- -4*(-z+7)=z-17
- -4*(z+7)=z+17
- -4*(-z-7)=z+17
- 4*(-z+7)=z+17
-4*(-z+7)=z+17 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 z)
from left part to right part, we given:
$$4 z = z + 45$$
Move the summands with the unknown z
from the right part to the left part:
$$3 z = 45$$
Divide both parts of the equation by 3
We get the answer: z = 15
-4*(-z+7) = z+17
Expand brackets in the left part
4*z-4*7 = z+17
Move free summands (without z)
from left part to right part, we given:
$$4 z = z + 45$$
Move the summands with the unknown z
from the right part to the left part:
$$3 z = 45$$
Divide both parts of the equation by 3
z = 45 / (3)
We get the answer: z = 15
The graph