Evaluate these expression and explain. will be marked brainliest

You want to follow the order of operations:

do things inside grouping/parentheses first

then do any exponents

then do multiplication/division, left-to-right

then do addition/subtration, left-to-right

15 - 4 x 3: do multiplication before subtration

    15 - 4 x 3 = 15 - 12 = 3

5 + ( 2 + 1 ) ^ 3: do what's in parentheses, then exponent, then addition

    5 + (2+1) ^ 3 = 5 + 3^3 = 5+27 = 32

7 + 4 x 2^3: do exponent first, then multiplication, then addition:

    7 + 4 x 2^3 = 7 + 4 x 8 = 7 + 32 = 39

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step-by-step explanation: