Mister Exam
Other calculators
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How to use it?
- Equation:
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Equation x^2-x-7=0
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Equation x^2+x-9=0
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Equation -2(-2-y)-y-2=0
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Equation x+5=13
- Express {x} in terms of y where:
- -6*x-13*y=17
- -7*x+5*y=1
- -6*x-19*y=7
- -19*x-4*y=-19
- Sum of series:
- 4x
- Integral of d{x}:
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4x
- Derivative of:
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4x
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Identical expressions
- (five -7x)+8x-(fifteen -13x)=4x
- (5 minus 7x) plus 8x minus (15 minus 13x) equally 4x
- (five minus 7x) plus 8x minus (fifteen minus 13x) equally 4x
- 5-7x+8x-15-13x=4x
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Similar expressions
- (5-7x)+8x+(15-13x)=4x
- 4*(x-3)-16=5*(x-5)
- cos(4*x)=1
- (5-7x)-8x-(15-13x)=4x
- sin(4*x)=-1
- 4*x^2-20*x=0
- (5+7x)+8x-(15-13x)=4x
- (5-7x)+8x-(15+13x)=4x
(5-7x)+8x-(15-13x)=4x equation
The teacher will be very surprised to see your correct solution 😉
The solution
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5 - 7*x + 8*x + -15 + 13*x = 4*x
$$\left(8 x + \left(5 - 7 x\right)\right) + \left(13 x - 15\right) = 4 x$$
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:
$$14 x = 4 x + 10$$
Move the summands with the unknown x
from the right part to the left part:
$$10 x = 10$$
Divide both parts of the equation by 10
We get the answer: x = 1
(5-7*x)+8*x-(15-13*x) = 4*x
Expand brackets in the left part
5-7*x+8*x-15+13*x = 4*x
Looking for similar summands in the left part:
-10 + 14*x = 4*x
Move free summands (without x)
from left part to right part, we given:
$$14 x = 4 x + 10$$
Move the summands with the unknown x
from the right part to the left part:
$$10 x = 10$$
Divide both parts of the equation by 10
x = 10 / (10)
We get the answer: x = 1