Question

Solve for x,DE,and EF

Answer 1

Explanation:

if I can read this right, then we have

DE = 3x + 4

EF = 7x - 6

in total, DF = DE + EF = 28

so,

3x + 4 + 7x - 6 = 28

10x - 2 = 28

10x = 30

x = 3

DE = 3×3 + 4 = 13

EF = 7×3 - 6 = 15