# Solving systems of equations by substitution and addition

-3/x+2 * 5x+10/9

ax+am+3x+3m/a^2-9 / 2x+2m/a-3

solve and write the answer in the lowest term:

5a^2b/12a * 2a^3b/15ab^6

solve the equation

x/x-1-3/x=1/2

solve for y:

2(b+y)=b

solve by substitution

y=3x+11

2x+3y=0

x+2y=1

8x+6y=4

solve by addition

-3x+y=3

2x-3y=5

solve by addition:

x+3(y-1)=11

2(x-y)+8y=28

solve for 3 variables:

2x-y+z=5

x+y-2z=-4

3x-y+3z=10

Perform operation and simplify

5/root2

root 15/2+root5

find all real solutions:

W^2=100

Find all real solutions

3^ root 2x+9=3

root x-3=(root x+2)-1

solve using quadratic formula:

2x^2+5x-3=0

solve by completing the square:

x^2+10x+25=0

solve by using the quadratic formula:

x^2+6x+6=0

solve by method:

x(x+1)=12

a^4-5a^2+4=0

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The expert solves the systems of equation by substitution and addition.