Question

(1.) 4-4/9*5/8+5/8*3-5/9=? 2-11/15*1-1/19-1/19*3/10-1-1/6*1-1/19=?9/10c-2/15c-3/5c если с=2,4

Answer 1

14/с 6=5/д8+12+ос35//**

Answer 2

(1.)

To solve the expression, we can use the order of operations: PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

4-4/95/8+5/83-5/9 = 4 - (4/9 * 5/8) + (5/8 * 3) - 5/9 (multiplication and division first) = 4 - 10/72 + 15/8 - 5/9 (simplify fractions) = 4 - 5/36 + 135/36 - 20/36 (find common denominator for subtraction) = 4 + 110/36 (add/subtract fractions) = 4 + 55/18 (simplify fraction)

Therefore, the solution is 4 + 55/18.

(2.)

2-11/151-1/19-1/193/10-1-1/6*1-1/19 = 2 - 11/15 * 20/361 - 3/190 - 7/114 (multiplication first, convert mixed numbers to improper fractions) = 2 - 440/5415 - 3/190 - 7/114 (simplify fractions) = 2 - 88/1083 - 57/3429 - 140/798 (find common denominator for subtraction) = 2 - 25276/327927 (add/subtract fractions)

Therefore, the solution is approximately -0.933.

(3.)

To solve this expression, we substitute c = 2.4 and simplify.

9/10c - 2/15c - 3/5c = 9/10(2.4) - 2/15(2.4) - 3/5(2.4) (substitute c = 2.4) = 2.16 - 0.32 - 1.44 (simplify)

Therefore, the solution is approximately 0.40.