Question no.1
Let the three numbers be 4x,6x and 8x
Now atq since the sum of no.s is 90
then,
4x+6x+8x=90
=> 18x=90
=> x=90/18=5
since x is 5 so numbers are
4x=20
6x=30
8x=40
Question no.2
Numbers are -32/4
-400/50
-64/8
-80/10
Question no.4
1) 2(x+3)=x+7
=> 2x+6=x+7
=> 2x-x=7-6
=> x=1
2) q/4-7=13
=>q/4=13+7=20
=>q=20x4=80
Question no.5
complementary - 45+45 , 60+30
supplementary - 90+90 , 160+20
Pls mark me as brainliest it took me a lot of time
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Answers & Comments
Question no.1
Let the three numbers be 4x,6x and 8x
Now atq since the sum of no.s is 90
then,
4x+6x+8x=90
=> 18x=90
=> x=90/18=5
since x is 5 so numbers are
4x=20
6x=30
8x=40
Question no.2
Numbers are -32/4
-400/50
-64/8
-80/10
Question no.4
1) 2(x+3)=x+7
=> 2x+6=x+7
=> 2x-x=7-6
=> x=1
2) q/4-7=13
=>q/4=13+7=20
=>q=20x4=80
Question no.5
complementary - 45+45 , 60+30
supplementary - 90+90 , 160+20
Pls mark me as brainliest it took me a lot of time