Answer:
x = 5
AB = 13
BC = 17
Step-by-step explanation:
So we have to make an equation;
(2x + 3) + (4x - 3) = 30
Collect like terms
6x = 30
Divide both sides by 6
x = 5
To find AB we have to plug in the value of x;
2x + 3 = 2(5) + 3
10 + 3 = 13
AB = 13
To find BC we also have to plug in the value of x;
4x - 3 = 4(5) - 3
20 - 3 = 17
BC = 17
