Step-by-step explanation:Let's solve each of the given expressions step by step. We will follow the order of operations, often remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).1. Calculate 6+422−15:6+422=428428−15=413Value: 4132. Calculate 5+362×3−4:362×3=10865+1086=10911091−4=1087Value: 10873. Calculate 637×3−4:637×3=19111911−4=1907Value: 19074. Calculate 25×242÷6+18:25×242=60506050÷6≈1008.331008.33+18≈1026.33Value: 1026.33 (rounded to two decimal places)5. Calculate 36−10×2÷5−11:10×2=2020÷5=436−4−11=22−11=11Value: 11Summary of Values:1. 4132. 10873. 19074. 1026.335. 11