Substitution

solve equations by substitution:

x+y= 11
y=5x-25

Correct result:

x =  6
y =  5

Solution:


x+y= 11
y=5x-25

x+y= 11
y=5•x-25

x+y = 11
5x-y = 25

x = 6
y = 5

Our linear equations calculator calculates it.



We would be pleased if you find an error in the word problem, spelling mistakes, or inaccuracies and send it to us. Thank you!






Showing 0 comments:
avatar




Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

You need to know the following knowledge to solve this word math problem:

Next similar math problems:

  • Two equations
    children_23 Solve equations (use adding and subtracting of linear equations): -4x+11y=5 6x-11y=-5
  • Simple equations
    enc2 Solve system of equations: 5x+3y=5 5x+7y=25
  • Equations
    p1110617 Solve following system of equations: 6(x+7)+4(y-5)=12 2(x+y)-3(-2x+4y)=-44
  • Linear system
    linear_eq_2 Solve a set of two equations of two unknowns: 1.5x+1.2y=0.6 0.8x-0.2y=2
  • Linear system
    vahy_eq Solve this linear system (two linear equations with two unknowns): x+y =36 19x+22y=720
  • Equations - simple
    linearna_1 Solve system of linear equations: x-2y=6 3x+2y=4
  • Simple equation 9
    eq2 Solve the following equation: -8y+5=-9y+9
  • Algebra
    parabol_3 X+y=5, find xy (find the product of x and y if x+y = 5)
  • Elimination method
    rovnice_1 Solve system of linear equations by elimination method: 5/2x + 3/5y= 4/15 1/2x + 2/5y= 2/15
  • Linsys2
    linear_eq_3 Solve two equations with two unknowns: 400x+120y=147.2 350x+200y=144
  • Non linear eqs
    q2_non_linear Solve the system of non-linear equations: 3x2-3x-y=-2 -6x2-x-y=-7
  • Prove
    two_circles_1 Prove that k1 and k2 are the equations of two circles. Find the equation of the line that passes through the centers of these circles. k1: x2+y2+2x+4y+1=0 k2: x2+y2-8x+6y+9=0
  • Intersections 3
    intersect_circles Find the intersections of the circles x2 + y2 + 6 x - 10 y + 9 = 0 and x2 + y2 + 18 x + 4 y + 21 = 0
  • The angle of lines
    lines Calculate the angle of two lines y=x-21 and y=-2x+14
  • Three points 4
    linearna The line passed through three points - see table: x y -6 4 -4 3 -2 2 Write line equation in y=mx+b form
  • Stock market
    money_1 Simon one day decided to invest € 62000 to the stock market. After six months, he invested July 25 stock markets fell by 47%. Fortunately for Simon, from July 25 5 to October 25 his shares have risen by 39%. Simon is then: ?
  • Slope
    slope_1 Find the slope of the line: x=t and y=1+t.