3x + 11
10 + 2(x - 1) + 7 x 3x + 1 =10 + 2x - 2 + (7 x 3x) + 1 =10 + 2x - 2 + 21x + 1 =2x + 21x + 10 - 2 + 1 =23x + 9
x + 3x - 10 = 5 - 4 4x - 10 = 1 4x = 1 + 10 x = 11/4
0 - - 3x - 1 = 3x - 1
x^2 + 3x - 2; -x^2 - 3x + 2andx - 1; 1 - x
combine like terms. 3x+1+4x-5=31 3x+4x=7x 7x+1-5=31 1-5=-4 7x-4=31 then solve it 7x=35 x=5
3x+9=2x+10 3x+9-2x=10 9+x=10 x=1
5*2-3x-1 = 0 10-3x-1 = 0 -3x = 1-10 -3x = -9 x = 3
10
3x + 11
3x + 6x +1 = 10 9x = 10 - 1 9x = 9 x = 1
x= -3 -3(-3) +1=10 also: -3X-3+1=10
3x - 4y = 10-3x - 4y = 8 -> add line 1 to line 2 3x - 4y = 100x - 8y = 18 -> -8y = 18 -> y = -18/8 = -9/4 -> 3x - 4*(-9/4) = 10 -> 3x + 9 = 10 -> 3x = 1 -> x = 1/3
10 + 2(x - 1) + 7 x 3x + 1 =10 + 2x - 2 + (7 x 3x) + 1 =10 + 2x - 2 + 21x + 1 =2x + 21x + 10 - 2 + 1 =23x + 9
x + 3x - 10 = 5 - 4 4x - 10 = 1 4x = 1 + 10 x = 11/4
3+3x+7x=13 3x+7x=10 10x=10 x=1
2(x+5) =3X+1 => 2x+10-3x-1=0. => -x+9 => x=9