3x minus 2 minus -6x = -4 minus -4x plus 12

Alength on a map is 7.5 inches. thescale is 1 inch: 5 miles. what is theactual distance? a 1.5 miles c 12.5 milesb 2.5 miles d 37.5 miles

The perimeter of a triangle is 69 cm. the first is 5 cm shorter than the second side. the third side is twice as long the first side. find the length of each side

What is the answer to this question? i'm a bit stumped. also how do i do it? 5(x - 4) = 2(x + 5)