Question 211322: please help me solve I do not understand
1.3(7x+4)>1.8-(x+5) Found 2 solutions by checkley77, ankor@dixie-net.com:Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! 1.3(7x+4)>1.8-(x+5)
9.1x+5.2>1.8-x-5
9.1x+x>1.8-5-5.2
10.1x>-8.4
x>-8.4/10.1
x>-.83168
Proof:
Let x=-.831
1.3(7*-.831+4)>1.8-(-.831+5)
1.3(-5.817+4)>1.8-(4.169)
1.3*-1.817>-2.369
-2.3621>-2.369
You can put this solution on YOUR website! please help me solve I do not understand
1.3(7x+4) > 1.8-(x+5)
;
multiply both sides by 10 to get rid of those annoying decimals, results:
13(7x + 4) > 18 - 10(x + 5);
:
Multiply inside the brackets
91x + 52 > 18 - 10x - 50
91x + 52 > -10x - 32
:
91x + 10x > -32 - 52
101x > -84
x >
x > -.83168
:
Check to see if true when x = -.8 which is greater than -.83168
1.3(7(-.8)+4) > 1.8-(-.8+5)
1.2(1.6) > 1.8-(4.2)
-.12 > -2.4
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