5x + 2 - 3x = 16 Combining terms: 2x + 2 = 16 Subtract 2 from both sides: 2x = 14 Divide both sides by 2: x = 7
3x2 + 2x = 16 ∴ 3x2 + 2x - 16 = 0 ∴ 3x2 - 6x + 8x - 16 = 0 ∴ 3x(x - 2) + 8(x - 2) = 0 ∴ (3x + 8)(x - 2) = 0 ∴ x ∈ {-8/3, 2}
3x - 5 = 2y3/2X - 5/2 = y
3x + 16 = 22 3x = 6 x = 6/3 x = 2
(2, 2)
5x + 2 - 3x = 16 Combining terms: 2x + 2 = 16 Subtract 2 from both sides: 2x = 14 Divide both sides by 2: x = 7
3x2 + 2x = 16 ∴ 3x2 + 2x - 16 = 0 ∴ 3x2 - 6x + 8x - 16 = 0 ∴ 3x(x - 2) + 8(x - 2) = 0 ∴ (3x + 8)(x - 2) = 0 ∴ x ∈ {-8/3, 2}
Set up the equation and solve: 15x - 8 - 3x = 16 (next add 8 to each side) 15x - 3x - 16 + 8 (next simplify) 12x = 24 (next divide both side by 12 to solve for x) x = 2
3x - 2 + 5 = 16 3x + 3 = 16 3x = 13 x = 13/3 ~ 4.333
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
3
3x - 5 = 2y3/2X - 5/2 = y
3x - 2 = 2x + 4 3x - 2x = 4 + 2 x = 6
3x-2 = 2x+3 3x-2x = 3+2 x = 5
x+7y=16 ---------------------------1 3x- 7y=4 ---------------------------2 ------------------------------------------------------------------------------------------------------------------ 1+2 x+7y=16 3x-7y=4 4x=20 x=5 substitute x = 5 in x+7y=16 (5)+7y=16 7y=11 y=11/7
3x + 16 = 22 3x = 6 x = 6/3 x = 2
5x+2 = 3x-6 5x-3x = -6-2 2x = -8 x = -4