5x+2y>8, y≤4 5x+2(4)>8 5x+8>8 5x>0 x>0
32-5x=3x+8 32-5x-8=3x+8-8 24-5x=3x 24-5x+5x=3x+5x 24=8x x=24/8=3
5x - 7 = 23 .....+7....+7 5x=30 --- --- 5.....5 --->(x=6)<---
2X2+5x-12 4+5x-12 -8+5x 5x-8
8x - y = 31 <=> y = 8x - 31. 5x + 3y = 23 => 5x + 3 * (8x - 31) = 23 <=> 5x + 24x - 93 = 23 <=> 29x = 23 + 93 <=> 29x = 116 <=> 29x/29 = 116/29 <=> x = 4. y = 8x - 31 => y = 8 * 4 - 31 <=> y = 32 - 31 <=> y = 1.
if it is 5x + 8 = 23 then the answer is 3. if it is 5x - 8 = 23 then the answer is 31/5.
3X - 23 + 4X + 6 = 5X + 8combining like terms, 7X - 17 = 5X + 8subtracting 5X and adding 17 to each side, 7X - 5X = 8 + 17Then, 2X = 25X = 12.5
5x+2y>8, y≤4 5x+2(4)>8 5x+8>8 5x>0 x>0
32-5x=3x+8 32-5x-8=3x+8-8 24-5x=3x 24-5x+5x=3x+5x 24=8x x=24/8=3
5x - 7 = 23 .....+7....+7 5x=30 --- --- 5.....5 --->(x=6)<---
5x-6+23-7x 5x-7x+23-6 (rearranged) -2x+17 (simplification).
It is: 8-5x simplified
2X2+5x-12 4+5x-12 -8+5x 5x-8
8x - y = 31 <=> y = 8x - 31. 5x + 3y = 23 => 5x + 3 * (8x - 31) = 23 <=> 5x + 24x - 93 = 23 <=> 29x = 23 + 93 <=> 29x = 116 <=> 29x/29 = 116/29 <=> x = 4. y = 8x - 31 => y = 8 * 4 - 31 <=> y = 32 - 31 <=> y = 1.
4x - 8 = 5x 1) Add 8 to both sides. 4x - 8 (+ 8) = 5x (+ 8) Becomes 4x = 5x + 8 2) Subtrate 5x from both sides. 4x (- 5x) = 8 Becomes -1x = 8 Reduced to -x = 8 3) Multiply both sides by -1. Becomes x = -8
5x+8=6 5x=6-8 5x=-2 x=-0.4 Absolute value of -0.4=0.4
you just equal that equation to 0, then you solve for x 5x-8=0 5x=8 x=8/5