Have the oceans become 30% more acidic? Did the WHO get some of its excess death estimates wrong? Are just 100 companies responsible for 71% of global emissions and how stressed are South Africans?

Collecting like terms means to simplify terms in expressions in which the variables are the same. In the expression \(5a + 2b + 3a - 6b\), the terms \(5a\) and \(+ 3a\) are like terms, as are \(2b\) ...