Question

9. Раскройте скобки и приведите подобные члены. a) 12 + 5 (a - 2) =b) 13 + 2(7 - x) =c) 7c - 6(5 + c) =d) 21y - (5 + y) 7 =e) 25x + 219 - 3(2x - 5)2 =1) {[5 - 4(x-9)] – x}3 - 4 =Помогите пожалуйста срочно​

Answer 1

а) 12+5а-10=5а+2

б)13+14-2x=27-2x

c)7c-30-6c=(-30)

d)21у-35-7у=-35+14у

и)25х+219-12х-30=13х+189

1)((5-4х+36))-х)3-4=((-4х+31))-х)-3-4=-5х+31х-7=36х-7

Answer 2

a) 12 + 5(a - 2) = b To solve this equation, we need to distribute the 5 to the terms inside the parentheses: 12 + 5a - 10 = b Next, we can combine like terms: 5a + 2 = b

b) 13 + 2(7 - x) = c Again, we distribute the 2 to the terms inside the parentheses: 13 + 14 - 2x = c Combining like terms, we get: 27 - 2x = c

c) 7c - 6(5 + c) = d Distributing the -6 to the terms inside the parentheses: 7c - 30 - 6c = d Combining like terms: c - 30 = d

d) 21y - (5 + y) + 7 = e Simplifying the expression inside the parentheses: 21y - 5 - y + 7 = e Combining like terms: 20y + 2 = e

e) 25x + 219 - 3(2x - 5)2 = 1 Distributing the -3 to the terms inside the parentheses: 25x + 219 - 6x + 15 = 1 Combining like terms: 19x + 234 = 1

{[5 - 4(x-9)] – x}3 - 4 = ? To solve this expression, we need to simplify it step by step: 1. Distribute the -4 to the terms inside the brackets: [5 - 4x + 36] - x = ? 2. Combine like terms inside the brackets: [41 - 4x] - x = ? 3. Distribute the 3 to the terms inside the brackets: 3(41 - 4x) - x = ? 4. Simplify inside the brackets: 123 - 12x - x = ? 5. Combine like terms: 123 - 13x = ?

I hope this helps! Let me know if you have any further questions.