answer is 4
7x+19=-2x+55
+2x +2x
9x+19= 0 55
-19 -19
9x = 36
9 9
=4
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7x + 19 = -2x + 55Add 2x to both sides:9x + 19 = 55Subtract 19 from both sides:9x = 36Divide both sides by 9x = 4
55 - 2X = 7X + 19 add 2X to each side 55 = 9X + 19 subtract 19 from each side 36 = 9X divide each sides integers by 9 4 = X ------------check in original equation 55 - 2(4) = 7(4) + 19 55 - 8 = 28 + 19 47 = 47 ----------------checks
It is: 55+19 = 74
180
110