please help me with this answer I can't solve it please help me I will also mark u as brain list ifvu help me I'm in 7th std so please help in my grade according with full method
Answers
Answer:
i. x+5=9
=> x= 9-5= 4
Step-by-step explanation:
i. first you see there's x+5 on the left hand side. what you need to do it change the side of +5. if you change +5 from Left hand side to right hand side, it becomes -5 on the right hand side. and therefore, the calculation will be 9-5=4.
same way, you need to change the sides of the number. if a certain number is positive in one side, it will be negative on the other side. you just need to keep the variable x or a or whatever it is given there completely unchanged sides.
follow this process you can do the other ones too. I'll solve another one for you. but you also have to learn how to do this.
vi. x-4.2=11.4
=> x = 11.4-4.2
=> x = 7.2
Step-by-step explanation:
1.x+5=9
x=9-5
x=4
2.a+10=12
a=12-10
a=2
3.x+3/5=4/5
x=4/5-3/5
x=1/5
4.n+1.8=3
n=3-1.8
n=1.2
5.x-7=4
x=4+7
x=11
6.-12+a=23
a=23+12
a=35
7.x-4.2=11.4
x=11.4+4.2
x=15.6
8.p-2/7=4/7
p=4/7+2/7
p=6/7
9.y-9=-9
y=-9+9
y=0
10.-2/3+a=1/3
a=1/3+2/3
a=3/3=1
11.-6.4+m=-10
m=-10+6.4
m=-3.6
12.n-3/8=1/8
n=1/8+3/8
n=4/8=2/4=1/2
I THINK MY ANSWER WILL HELP YOU.
THANKYOU