1.

Simplify 15(y-4)+2(y-9)+(y+6)=0 Can anyone tell the answer​

Answer»

\sf\huge\bold{\underline{\underline{{Solution}}}}

15(y-4)+2(y-9)+(y+6)=0

Step 1: first we will expanding the terms

➠15×y-4×15+2×y-9×2+y+6=0

➠15y-60+2y-18+y+6=0

Now, terms are unarranged so ,we first arrange the term by placing like terms together means terms of same Variable together.

➠15y+2y+y-60-18+6=0

Solving CONSTANT term

Concept: plus minus =minus

minus minus =plus (but we PUT sign of -)

➠15y+2y+y -78+6=0

➠15y+2y+y -72=0

solving first term or Variable terms

➠18y-72=0

-72 is negative on the left side when we shifts it towards right side it's sign GETS changed.

➠18y=72

we KNOW 72 comes up in multiples of 18

➠y=72÷18=4

y=4

Check

15(y-4)+2(y-9)+(y+6)=0

=>15(4-4)+2(4-9)+(4+6)

=>15×0+2×-5+10

=>0-10+10=0+0=0


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