Michelle
Date: Tuesday 10 July 2018
Title: Maintenance
R = rearrange
1. 49 - 7m = 14
= 7m - 14 = 49
49 - 14 = 35
7 ÷ 35 = - 5
2. 3x - 9 = - 27
= 3x - 9 = -27
+9 + 9
3x = 18
x = -6
3. 2 (a + 24) = 30
= 2 x a = a2, 2 x 24 = 48, 2 x 30 = 60
2a + 48 = 60
4. 36 + 4u = 12
= R 4u + 12 = 36
36 - 12 = 24
24 ÷ 4 = 6
u = -6
5. -10m + 300 = 20
= - 300 - 300
-10m = 280
10 ÷ 280 = 28
6. 5h + 1 = 3
= 1 + 3 = 4.0
decimal
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