= -x=-10
= x = 10.
EXERCISE 7 (A)
Solse the following equations and check your answer:
1. (1) 10p - (3p - 4) = 4(p+1) +9 (i) 7 + 2(a + 1) - 3a = 5a
2017-5-8 M T 3. (1) 4y+?=21
(iii) 4(x + 3) - 2(x - 1) = 3x + ?
(1) 2m +3m=17
N
1
9
73.25-533-5 -25
.3472 **3.4372=x-1
3
10
7
3
7. 2.8y = 54 +
8. 0.26x + 0.09x = 8 -0.45x
+ 7) =
Solve the following equations :
2x + 3
5
4x +9
11
5x - 7
3x
3m +1
5m - 3
0.4-3
1.5: +9
.
2
4
x +4
X-2
Y-2
y -5
y+3
y + 5
Hint. Write --
(2x + 3) - (5x-7)
6x +11
20
2. 1912 - 1) – 5(+ 2) –>
17(2-x)-5(x +12)
1 - 70
21. (4 + 2)/5 = * =1. 22. =(x + 1)(x + 2) = 6
x
21.
(4+ x) (5 – 2
(2 + x) (7-2)
22.
-(x+1)(x + 2)
5x+1
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