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What is the value of x for 7x – 12 y = 180 / 7x = 84
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What is the value of x for 7x – 12 y = 180 / 7x = 84
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Mathematics
4 years
2021-08-18T21:49:10+00:00
2021-08-18T21:49:10+00:00 1 Answers
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eq^2: 7x=84 divide 84 by 7 which is 12.
therefore x is equal to 12. Then
1) take that 12 you got in equation 2 and substitute in equation 1 which is:
7x-12y=180
7(12)-12y=180
84 -12y=180
-12y=180-84
-12y=96 …………divide both sides with -12
-y=8 (×-1) both sides
y= -8
therefore 7(12)-12(-8)=180