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Pachacha [2.7K]
3 years ago
10

[(8*9)] - (6*7)] -15

Mathematics
2 answers:
strojnjashka [21]3 years ago
8 0

[(8*9)] - (6*7)] -15

do the parenthesis first because of using PEMDAS

P= parenthesis

E= exponents

M= multiplication

A= addition

S= subtraction

(8*9)=72

(6*7)=42

72-42=30

72-42-15

30-15

=15

Answer: 15

maks197457 [2]3 years ago
3 0

Answer:

15

Step-by-step explanation:

Simplify the following:

8×9 - 6×7 - 15

8×9 = 72:

72 - 6×7 - 15

-6×7 = -42:

72 + -42 - 15

72 - 42 - 15 = 72 - (42 + 15):

72 - (42 + 15)

| 4 | 2

+ | 1 | 5

| 5 | 7:

72 - 57

| 6 | 12

| 7 | 2

- | 5 | 7

| 1 | 5:

Answer:  15

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