Mister Exam
Other calculators
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How to use it?
- Equation:
- Equation a*x=b
-
Equation x^2-x+8=0
-
Equation 2^x=7
-
Equation 3x^2-2x=0
- Express {x} in terms of y where:
- 2*x+19*y=-7
- -4*x+7*y=-16
- -16*x+3*y=17
- 12*x-20*y=9
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Identical expressions
- five - two (x- seven)=5x-(2x- four)
- 5 minus 2(x minus 7) equally 5x minus (2x minus 4)
- five minus two (x minus seven) equally 5x minus (2x minus four)
- 5-2x-7=5x-2x-4
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Similar expressions
- 5-2(x+7)=5x-(2x-4)
- 5-2(x-7)=5x+(2x-4)
- 3/5-2*x-7/2*x-1=0
- (-(11/5))*(-2*x)*(-7)=0
- 5-2(x-7)=5x-(2x+4)
- 5+2(x-7)=5x-(2x-4)
5-2(x-7)=5x-(2x-4) equation
The teacher will be very surprised to see your correct solution 😉
The solution
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5 - 2*(x - 7) = 5*x + -2*x + 4
$$5 - 2 \left(x - 7\right) = 5 x + \left(4 - 2 x\right)$$
Detail solution
Given the linear equation:
Expand brackets in the left part
Expand brackets in the right part
Looking for similar summands in the left part:
Looking for similar summands in the right part:
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 3 x - 15$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-5\right) x = -15$$
Divide both parts of the equation by -5
We get the answer: x = 3
5-2*(x-7) = 5*x-(2*x-4)
Expand brackets in the left part
5-2*x+2*7 = 5*x-(2*x-4)
Expand brackets in the right part
5-2*x+2*7 = 5*x-2*x+4
Looking for similar summands in the left part:
19 - 2*x = 5*x-2*x+4
Looking for similar summands in the right part:
19 - 2*x = 4 + 3*x
Move free summands (without x)
from left part to right part, we given:
$$- 2 x = 3 x - 15$$
Move the summands with the unknown x
from the right part to the left part:
$$\left(-5\right) x = -15$$
Divide both parts of the equation by -5
x = -15 / (-5)
We get the answer: x = 3
The graph