Question

If RE = 4x + 7, ET = 2(3x - 4), and RT = 43, then find the value for x

Answer 1

we know that

RT=RE+ET ----> by adittion length postulate

substitute the given values

43=4x+7+2(3x-4)

solve for x

43=4x+7+6x-8

43=10x-1

10x=43+1

10x=44

x=4.4