2. Solve the following equations :
(1) 4 (m + 3) = 18
(ii) - 2 (x + 3) = 5
(iv) 3(n-5) = -21
(0) 4 (2-x) = 9
(11) 4 + 5p - 1) = 34 (vii) 8 (2-a) = -5a
(ii) 3n-5) 21
(vi) 3-22- y) = 7
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Step-by-step explanation:
( i )
4 ( m + 3 ) = 18
4m + 12 = 18
4m = 18 - 12
m = 6 / 4
m = 1.5
( ii )
- 2 ( x + 3 ) = 5
- 2x - 6 = 5
-2x = 5 + 6
x = 11 / - 2
x = - 5.5
( iii )
3 ( n - 5 ) = - 21
3n - 15 = - 21
3n = - 21 + 15
n = - 7 / 3
( iv )
4 ( 2 - x ) = 9
8 - 4x = 9
- 4x = 9 - 8
x = 1 / - 4
x = - 0.25
( vii )
8 ( 2 - a ) = - 5a
16 - 8a = - 5a
16 = - 5a + 8a
a = 16 / - 3
a = - 16 / 3
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