Solve the simultaneous equations
1 answer:
Answer:
x = -2, y = 3
Step-by-step explanation:
2x + 3y = 5
5x - 2y = -16
In order to find the value of a variable, we must eliminate the other variable by multiplying the equations to get the same coefficient.
We can multiply the first equation by 5 and the second one by 2 to get the same coefficient for x, the equations then become:
10x + 15y = 25
10x - 4y = -32
Now we can subtract:
19y = 57
y = 3
Since we know the value of y, we can substitute it into one of the original equations:
2x + 3(3) = 5
2x + 9 = 5
2x = -4
x = -2
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Answer:
99.036
Step-by-step explanation:
in 5 years halima got 165.06 euro
165.06÷5=33.012
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<span>4</span>
Hope this helps!
x+x+x+2 = 3x+2
So,
A is correct
B is wrong
C is wrong
D is correct [2x+2+x = 3x+2]
E is wrong
Please mark Brainliest if this helps!
Answer:
1188 grams of water
Step-by-step explanation:
x is the grams of water
so total is 12+x grams
sugar/total is 12/12+x
and 1% ratio is 12/12+x=1/100
so x would be 1188 grams of water.
Answer:
2/15
Step-by-step explanation:
