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First you need to eliminate one of the letters. In this case, by adding the two equations together we can eliminate y.
x - y = 90
+
x + y = 360
__________
2x = 450
x = 225
if x = 225 we can put this back in to the first equation to find y.
x - y = 90 ----- 225 - y = 90 ----- 225 - 90 = y ----- 135 = y
Now, knowing that x = 225 and y = 135 we can double check that this is right by trying these numbers in the second equation.
x + y = 360 ----- 225 + 135 = 360!! Correct!
What else can I help you with?
Y plus 60 equals 90?
Y=30
Where would you put parentheses around the following equation 200 minus 90 plus 20 equals 10?
(200-90)+20=10
What number minus 56 equals 90?
Answer 146 - 56 = 90 :)
What is 52 plus 90 plus -76 plus x equals 360?
Add everything up on the left side first: 52 + 90 + (-76) + x = 66 + x 66 + x = 360 Now just subtract 66 from both sides: 66 + x - 66 = 360 - 66 x = 294
90 plus 90 plus 60 equals?
90 + 90 + 60 = 240
What plus 75 equals 90?
90 minus 75 =15 therefore 15 + 75 = 90
0.25 x 360 equals?
0.25multiply 360
Y plus 60 equals 90?
Y=30
Where would you put parentheses around the following equation 200 minus 90 plus 20 equals 10?
(200-90)+20=10
What does 30x12 equals?
360
What is 90 minus 28 equals?
62
What number minus 56 equals 90?
Answer 146 - 56 = 90 :)
What is 52 plus 90 plus -76 plus x equals 360?
Add everything up on the left side first: 52 + 90 + (-76) + x = 66 + x 66 + x = 360 Now just subtract 66 from both sides: 66 + x - 66 = 360 - 66 x = 294
90 plus 90 plus 60 equals?
90 + 90 + 60 = 240
What is 127 take out 90?
127 minus 90 equals 37. 127 - 90 = 37.
What minus what equals -36?
x - 54 = 36x = 90
What is 90 plus 70 plus 60 plus 80 plus 90 equals?
390
