4x + 3y = -5 (Eq 1) 3x + 5y = -12 (Eq 2) Multiply the first equation by 3 and the second by 4: 12x + 9y = -15 (Eq 3) 12x + 20y = -48 (Eq 4) subtract Eq 3 from Eq 4 gives 11y = -33 so y = -3 and x = (15 + 12)/3 =1 Check: (4 x 1) + (3 x -3) = 4 - 9 = -5 and (3 x 1) + (5 x -3) = 3 - 15 = -12 QED Subtract
It is an equation and the value of x is 7
It is an equation and the value of d is 2
It is an equation and the value of x is 13/3
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
Presumably this is a simultaneous equation in the form of: 3r-4s = 0 2r+5s = 23 Multiply all the terms in the top equation by 2 and in the bottom equation by 3: 6r-8s = 0 6r+15s = 69 Subtract the bottom equation from the top equation: -23s = -69 Divide both sides by -23 to find the value of s remembering that a minus number divided into a minus number is equal to a plus number: s = 3 Substitute the value of s into the original equations to find the value of r: Therefore: r = 4 and s = 3
Another straight line equation is needed such that both simultaneous equations will intersect at one point.
It seems to be some kind of simultaneous equation with too many equality signs in it.
Solving tne simultaneous equation gives x = 19.8 and y = -2.2
It's a simultaneous equation and can be solved by elimination which works out as:- x = -4 and y = 1
It is a simultaneous equation and when solved its solutions are x = 71/26 and y = 50/13
It is an equation and the value of x is 2
It is an equation and the value of x is 6
It is an equation and the value of x is 8
It is an equation and the value of x is -3
It is an equation and the value of x is 4
It is an equation and the value of x is 4
It is an equation and the value of x is 1