Question

Вставь пропущенные знаки действий так , чтобы получились верные равенства 1)7...5...9...15=18 2)8...7...6=7 30...20...9...1=18 8...4...3=9

Answer 1

1)7*5-9-15=18
2)8-7+6=7
3)30-20+9-1=18
4)8+4-3=9

Answer 2

8+4-3=9
8-7+6=7
30-20+9-1=18 7+5-9+15=18

Answer 3

1) 7 + 5 + 9 + 15 = 18 2) 8 - 7 + 6 = 7 + 30 - 20 - 9 + 1 = 18 + 8 - 4 - 3 = 9

Explanation:

In the first equation, we need to fill in the missing addition signs to make the equation true. The correct equation is: 7 + 5 + 9 + 15 = 18

In the second equation, we need to fill in the missing addition and subtraction signs to make the equation true. The correct equation is: 8 - 7 + 6 = 7 + 30 - 20 - 9 + 1 = 18 + 8 - 4 - 3 = 9

In both equations, we need to follow the order of operations (PEMDAS/BODMAS) to correctly solve the equations. According to the order of operations, we perform calculations within parentheses first, then any exponents, followed by multiplication and division from left to right, and finally addition and subtraction from left to right.

In the second equation, we have a series of additions and subtractions. To solve it, we follow the order of operations and fill in the missing signs accordingly.