\[\left(\sum^{n}_{j=1}(a_{j}+b_{j})^{p}\right)^{1/p}\leq\left(\sum^{n}_{j=1}a_{j%
}^{p}\right)^{1/p}+\left(\sum^{n}_{j=1}b_{j}^{p}\right)^{1/p}.\]