Save guides, add subjects and pick up where you left off with your BBC account. Same signs give a positive: \(3 + (+2) = 3 + 2 = 5\) Same signs give a positive: \(3 - (-2) = 3 + 2 = 5\) Different ...

Save guides, add subjects and pick up where you left off with your BBC account. What is the difference in temperature between a desert at 40 °C and a mountain top at -2 °C? \(40 - (-2 ...