2x + y = 25
x + y = 14
Subtract second equation from the first: x = 11
Substitute this value of x in the second equation: 11 + y = 14 ie y = 3
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If -2x +14 = 0, -2x = -14, or x = 7.
2x + 5 = 25 2x = 20x = 10
270
2x + 4 = 14 (subtract 4 from both sides) 2x = 10 (divide both sides by 2) x = 5
8x-7 plus 2x equals 6 plus 5x plus 2?