Question

3a+3b=√72 a+b=? Helppp

Answer 1

3 a + 3 b = √72

3 ( a + b ) = 6√2

a + b = 6√2 / 3

a + b = 2√2

Answer 2

$\it 3a+3b=\sqrt{72} \Rightarrow 3(a+b) =\sqrt{36\cdot 2} \Rightarrow 3(a+b) = 6\sqrt2|_{:3} \Rightarrow a+b = 2\sqrt2$