Mister Exam

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How to use it?
х+у=140; 140/х-140/у=7/12
4(у-3х)-5(у-4х)=-10; 6(х-2у)+5у=-20
x2-y2=24; X-2y=7
log3x+log9y=3; log1/3x+log3y=3
Identical expressions
х+у= one hundred and forty ; one hundred and forty /х- one hundred and forty /у= seven / twelve
х plus у equally 140; 140 divide by х minus 140 divide by у equally 7 divide by 12
х plus у equally one hundred and forty ; one hundred and forty divide by х minus one hundred and forty divide by у equally seven divide by twelve
х+у=140; 140 divide by х-140 divide by у=7 divide by 12
Similar expressions
х-у=140; 140/х-140/у=7/12
х+у=140; 140/х+140/у=7/12

х+у=140; 140/х-140/у=7/12

You have entered [src]

x + y = 140

$$x + y = 140$$

140   140       
--- - --- = 7/12
 x     y

$$- \frac{140}{y} + \frac{140}{x} = \frac{7}{12}$$

-140/y + 140/x = 7/12

Rapid solution

$$x_{1} = 60$$
=
$$60$$
=

$$y_{1} = 80$$
=
$$80$$
=

$$x_{2} = 560$$
=
$$560$$
=

$$y_{2} = -420$$
=
$$-420$$
=

-420

Numerical answer [src]

x1 = 60.0
y1 = 80.0

x1 = 60.0
y1 = 80.0