7d + 2 < 51
7d < 49
d < 7
51 + 2z + 8z = 23 Collect 'like terms' 51 + 10z = 23 Subtract '51' from both sides 10z = 23 - 51 = -28 z = -28 /10 z = - 2.8 NB However, you have NOT indicated the mathematical signs !!!!!
The answer to 51 plus 954 is 1,005
102
-51
51-3x=8x+1851=3x+8x+1851-18=11x33=11xx=351-9=24+1842=42
== ==
514889 + 51 = 514,940
50 + 51 = 101
45 + 51 = 96
51 + 56 = 107
-51 + 76 = 25
yes.W= 7