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5x -3y = 23
7x - 4y = 33
This is simultanreous equations. Arbitrarily decide which letter to eliminate. In this case 'y'
To do this multiply the top eq'n by '-4' and the bottom by '3'
Hence
-20x + 12y = -92
21x - 12y = 99
Add the two eq'ns. This will eliminate 'y'
x = 7
Substitute into either eq'n for 'y'
49 - 4y = 33
-4y = - 16
y = 4
Hence (x,y) = ( 7,4)
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(7,4)
5x= 23+3y, x= 23+3Y)/5 , 7.23 - 7.3Y)/5 = 33, 21Y = 161-33)/5= 5, Y = 5/21 , Y = 0,24 , X = 23 +3. 0,24)/5 = 4,75
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Continue Learning about Algebra
Evaluate a - 13 when a equals 33?
20.
How do i Order these numbers in least to greatest 1 13 23 0.36 33?
Well, start with any decimals u have, like 0.36. that is first. then the single digits, like 1, which is next. then 13, 23 and finally 33. since 13 is lower then 23, which is lower then 33. so the order is 0.36, 1, 13, 23, 33.
What is the answer 3.3x10 equals?
3.3 x 10= 33
What should be added to both sides of this equation to solve for the variable p minus 33 equals 17?
p - 33 = 17 Add '33' to both sides Hence p - 33 + 33 = 17 + 33 p = 50
What is the order pair for x plus 7y equals 33 and 3x - 2y equals 7?
The ordered pair is (5, 4).
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