Good work ! Did you have a question you wanted to ask ?
3y = 2x + 15
The solution pair is (-7, 22), demonstrated as follows: (1) x + y = 15 : given; (2)4x + 3y = 38 : given; (3)3x + 3y = 45 : equation (1), multiplied by 3; (4) x = -7 : equation (2), minus equation (3); (5) y = 22 : equation (1), minus equation (4).
It is a quadratic equation and its solutions are: x = 3 and x = 5
it equals -15
Yes that is correct
Good work ! Did you have a question you wanted to ask ?
3x - 12 = 10x - 15 - 6x -10 3x - 12 = 4x -25 3x + 13 = 4x 13 = 4x - 3x 13 = x None?
3y = 2x + 15
The solution pair is (-7, 22), demonstrated as follows: (1) x + y = 15 : given; (2)4x + 3y = 38 : given; (3)3x + 3y = 45 : equation (1), multiplied by 3; (4) x = -7 : equation (2), minus equation (3); (5) y = 22 : equation (1), minus equation (4).
12
This is a simultaneous equation question. 4(3x+4y = 90) 3(4x-3y = -5) Multiply the top equation by 4 and the bottom equation by 3 then subtract the bottom equation from the top equation remembering that in maths a minus from a minus is equal to a plus. 12x+16y = 360 12x-9y = -15 And when subtracted: 0+25y = 375 Divide both sides of the equation by 25 to find the value of y: y = 15 Substitute 15 for y into the original equation to find the value of x: Solution: x = 10 and y = 15
It is a quadratic equation and its solutions are: x = 3 and x = 5
it equals -15
15
2x57-99 equal 15
To find the number that minus 15 percent equals 13,600, you can set up the equation: ( x - 0.15x = 13,600 ). This simplifies to ( 0.85x = 13,600 ). Solving for ( x ), you divide both sides by 0.85, giving ( x = \frac{13,600}{0.85} ), which equals 16,000. Thus, the number is 16,000.