Question

solve the following equations .answer plz i will say thanks and make a brainlist​

Answer 1

Step-by-step explanation:

49-21y-121+22y+154=0

-121+49-3y+22y+154=0

-72+154+22y=0

82+19y=0

19y= -82

y=-82/19

Answer 2

Question

7(7-3y)-11(11-2y)+154=0

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

7(7-3y)-11(11-2y)+154=0

⟾49-21y-121+22y+154=0

Taking variable terms together and constant terms Together.

⟾-21y+22y+49-121+154

⟾y+49+33=0

⟾y+82=0

⟾y=-82

Check

⟾7(7-3×-82)-11(11-2×-82)+154

⟾7(7+246)-11(11+164)+154

⟾7(253)-11(175)+154

⟾1771-1925+154

⟾-154+154=0

Concept

• plus minus =minus
• Minus minus=plus (but sign of minus)
• In multiplication - × - = +ve ; + × - = -.