A scale for a map states that 2 inches equals 21 miles. If the distance from El Paso to San Antonio on the map is 53 inches, wha
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x = 2
Collect terms in x to one side of the equation and numeric values on the other side.
1 + 4x = - 5 + 7x ( subtract 7x from both sides )
1 + 4x - 7x = - 5
1 - 3x = - 5 ( subtract 1 from both sides )
- 3x = - 6 ( divide both sides by - 3 )
x = = 2