Add the two equations you get 5y = 60 so y = 12 and x = 2
To solve for x, set up the equation: 2x +2x = 40 (then simplify) 4x = 40 (then divide both sides of the equation by 4) x = 10 (this is the answer)
y=16 x= -4
2x+9 = 49-3x 2x+3x = 49-9 5x = 40 x = 8
7. 8x-40=2x+2 4x-20=1x+1 3x-21=0 3x=21 therefore x=7
3x + 2x = 40 5x = 40 x = 8
Add the two equations you get 5y = 60 so y = 12 and x = 2
10 - 3x = x - 2x + 40 10 - 3x = - x + 40 10 - 40 = 3x - x -30 = 2x -15 = x
To solve for x, set up the equation: 2x +2x = 40 (then simplify) 4x = 40 (then divide both sides of the equation by 4) x = 10 (this is the answer)
y=16 x= -4
2x+9 = 49-3x 2x+3x = 49-9 5x = 40 x = 8
2x+17=6x-23 23+17=6x-2x 40=4x x=40 / 4 therefore x=10
6x-52 = 4x+40 6x-4x = 40+52 2x = 92 Answer: x = 46
7. 8x-40=2x+2 4x-20=1x+1 3x-21=0 3x=21 therefore x=7
x=20
Yes it is and well done.
x^2+2x+40 = x^2-x+190Subtract x^2 from both sides2x+40 = -x+190Add x to both sides3x + 40 = 190Subtract 40 from each side3x = 150Divide both sides by 3x = 50