Question

solve the following by systematic method :

( a ) 2 (3y - 5 ) = 26
(b) 8a - 16 = 6a + 6
(c) 7 x - 2 / 3 + 4 = 15
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Answer 1

4 = 2 × 2. The common factor is 1. (v) 6abc = 2 × 3 × a × b × c. 24ab2 = 2 × 2 × 2 × 3 × a ... 7x − 42 = (7 × x) − (2 × 3 × 7) = 7 (x − 6) ... 5x2y − 15xy2 = (5 × x × x × y) − (3 × 5 × x × y × y).

ʜᴏᴘᴇ ɪᴛ ʜᴇʟᴘꜱ ʏᴏᴜ. ☺❤

Answer 2

Answer:

$(a) \: \: 2(3y - 5) = 26 \\ = > \frac{2(3y - 5)}{2} = \frac{26}{2} \\ = > 3y - 5 = 13 \\ = > 3y - 5 + 5 = 13 + 5 \\ = > 3y = 18 \\ = > \frac{3y}{3} = \frac{18}{3} \\ = > y = 6$

$(b) \: \: 8a - 16 = 6a + 6 \\ = > 8a -16 + 16 - 6a = 6a - 6a + 6 + 16 \\ = > 2a = 22 \\ = > \frac{2a}{2} = \frac{22}{2} \\ = > a = 11$

$(c) \: \: \frac{7x - 2}{3 + 4} = 15 \\ = > \frac{7x - 2}{7} = 15 \\ = > \frac{7x - 2}{7} \times 7 = 15 \times 7 \\ = > 7x - 2 = 105 \\ = > 7x - 2 + 2 = 105 + 2 \\ = > 7x = 107 \\ = > x \frac{107}{7}$