Pls answer these three questions
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Step-by-step explanation:
solution 1 :
(6x+7)/(3x+2)=(4x+5)/(2x+3)
(6x+7)(2x+3)=(4x+5)(3x+2)
12x^2+18x+14x+21=12x^2+8x+15x+10
32x+21=23x+10
32x-23x=10-21
9x=-11
therefore, x=-11/9...answer
solution 2 :
8/21÷(-32/39÷16/13)
8/21÷(-32/39 × 13/16)
8/21÷(-2/3)
8/21 × (-3/2)
-4/7...answer
solution 3 :
((5×2+4)/5)^2
(14/5)^2
196/25...answer
Answered by
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Answer:
Answer no. 5
x = - 11/9
Answer no.6
-4/7 or 4/-7
Answer no. 7
= 196/25
Step-by-step explanation:
Answer no. 5
(6x + 7) (2x + 3) = (3x +2) (4x +5)
12x^2 + 18x +14x + 21 = 12x^2 + 15x + 8x + 10
12x^2 - 12x^2 + 32x - 23x + 21 - 10 =0
9x + 11 = 0
9x = - 11
x = - 11/9
Answer no. 6
8/21÷ (-32/39 *13/16)
8/21 ÷(-2/3)
8/21*3/-2
= -4/7 or 4/-7
Answer no. 7
(14/5)^2
= 196/25
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