Question

solve the following
i)1upon 3x+12=15
ii)n+7=_3
iii)15-x=4​

Answer 1

Step-by-step explanation:

3) 15 – x = 4

15 – 4 = x

11 = x

2) n +7 =-3

n = -3–7

n= -10

1) 1/3x+12 = 15

cross multiple

Answer 2

Answer:

i) 1/3x+12=15

=>1/3x= 15-12

=>1/3x=3

=>1/x=3×3

=>1/x=9

=>9x=1

=>x=19

iii)15-x=4

=>-x=4-15

=>-x=-11

=>x=11

ii)n+7=3

=>n=3-7

=>n=-4