7. У простите выражение: \( \begin{array}{ll}\text { a) } 8 x+5 x & \text { б) } x+21 x+10 x\end{array} \)

Simplify the expression by following steps: - step0: Solution: \(8x+5x\) - step1: Collect like terms: \(\left(8+5\right)x\) - step2: Add the numbers: \(13x\) Calculate or simplify the expression \( x + 21*x + 10*x \). Simplify the expression by following steps: - step0: Solution: \(x+21x+10x\) - step1: Collect like terms: \(\left(1+21+10\right)x\) - step2: Add the numbers: \(32x\) Упростим выражения: a) \( 8x + 5x = 13x \) б) \( x + 21x + 10x = 32x \) Таким образом, результаты упрощения: - a) \( 13x \) - б) \( 32x \)