To solve the two equations simultaneously using the substitution method we need to rearrange one of the equation to make either

or

the subject.
We can try in turn rearranging both equations and see which unknown term would have been easier to solve first
Equation

Making

the subject

, dividing each term by 2

⇒ (Option 1)
Making

the subject

, multiply each term by 8 gives

⇒ (Option 2)
Equation

Making

the subject

, divide each term by 3

⇒ (Option 3)
Making

the subject

, divide each term by 8

⇒ (Option 4)
From all the possibilities of rearranged term, the most efficient option would have been the first option, from equation

with

as the subject,
Anything in absolute value signs like this |-1| is positive so it would be positive 1 instead of negative. For instead question one is -1. Hope this helps you!
The original price of the ring is <span>£</span>1400
Step-by-step explanation:
(9x-8)-(x+4)=8x+12
9x-8-x-4=8x+12
8x-12=8x+12 (no it's not)
So it's false.
Hey guys! I need help with this question urgently, so could you please help me out? Thanks in advance! Merry Christmas!
Question: brainly.com/question/19989741
Step-by-step explanation:
1 km = 1000 m
1 hour = 3600 s
so,
37.6 km = 37,600 m (still per hour or per 3600 s).
in 1 second now that is
37600/3600 = 10.44444444... m/s