0
2x - 3y = -1
3x + 2y = 31
eqn(1) * 2: 4x - 6y = -2
eqn(2) * 3: 9x + 6y = 93
Add the two: 13x = 91
Divide both sides by 13: x = 7
Substitute this value of x into eqn(1): 14 - 3y = -1
Add 3y to bot sides: 14 = -1 + 3y
Add 1 to both sides: 15 = 3y
Divide both sides by 3: 5 = y
So the solution is x = 7, y = 5
What else can I help you with?
Find the possible value or values of n in the quadratic equation 2n 2 - 7n plus 6 equals 0?
n = 3/2, n = 2
A plus b plus c plus d plus e equals 30 where c plus e equals 14 and d equals b plus 1 and a equals 2b-1 and a plus c equals 10 find values of letters?
a+b+c+d+e = 30 (i) c+e = 14 (ii) d+b = 1 (iii) a = 2b-1 (iv) a+c = 10 (v) By (i)-(ii)-(iii): a = 15 then, by (iv): b = 8 and by (v): c = -5 Also, b = 8 so by (iii): d = -7 and then by (i), e = 19
1 plus 1 equals 2 plus 2 equals 4 plus 4 equals 8 plus 8 equals 16 plus 16 equals 32 plus 32 equals 64 plus 64 equals 128 plus 128 equals 256 plus 256 equals 512 plus 512 equals 1024 plus 1024 equals?
2048
Why are the equations w minus x plus x equals w and w plus x minus x equals w called Identities?
They are identities because they are true for ALL values of w and x.
What is 900 plus 900 equals?
900 plus 900 equals 1800. When adding two numbers together, you are essentially combining their values to find the total sum. In this case, adding 900 and 900 results in 1800, as each 900 contributes its full value to the final sum.
How do you factor this. x2y2 plus 2x3y?
x^2y(2x + y)
Find x and y values for 2x plus 3jy equals -6 plus 12j?
x=-3y=4
What is the slope of line with the equation 2x 3y plus 6 equals 0?
Put the equation in this form: y=mx+b. Then m will be the slope. 2x3y+6=0 2x3y=-6 3y=-6/2x y=-2/2x y=-1/x This equation does not describe a straight line, but rather, it describes a curve.
Where do the curves of y equals 4x squared -2x -1 and y equals -2x squared plus 3x plus 5 intersect?
They intersect at points (-2/3, 19/9) and (3/2, 5) Solved by combining the two equations together to equal nought and then using the quadratic equation formula to find the values of x and substituting these values into the equations to find the values of y.
3x plus 7 equals 8 How many values of x have?
-2
What are x and y in the equation 3x plus 2y equals 2 -2 plus y equals 8?
The values are: x = -6 and y = 10
What is 456 equals 400 plus 50 plus 6?
Decomposition into decimal digits (or separating out into place values).
What plus what divided by 5 equals 5?
Any two values which total 25
What does 9k plus 4b minus 7 minus 5k plus b equals?
That depends what the values of k and b are.
If 2 plus 3 equals 10 and 7 plus 6 equals 63 and 6 plus 5 equals 66 and 8 plus 4 equals 96 then 9 plus 7 equals what?
144 (square the first value and add the product of the two values). In the statement 7 + 6 should = 91, not 63, which would be 7 + 2.
Find the possible value or values of n in the quadratic equation 2n 2 - 7n plus 6 equals 0?
n = 3/2, n = 2
What is a and b if a plus b equals 25 and a times b equals 126?
The values of a and b are 7 and 18 or 18 and 7
