Question

va roog frumos!!!!!!!!!!!!!!!!!
cu desen grafic

1. x+y=300
x-y=24
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x=?;y=?

2. a+b=392
b-a=397:7
-----------
a=?;b=?

3. a+b+c=245
b=a+23
b=c-16
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a=?; b=?; c=?

vaaa rrroooggg muuuult!!! dau coroana

Answer 1

1) 300-24=276

276:2=138

x=138+24=162

y=138

proba: 162+138=300

2) 397:7=56.7

392-56.7=335.3

335.3:2=167.65

b=167.65+56.7=224.35

a=167.65

proba: 224.35+167.65=392

3) a+b+c=245+23-16=252

252:3=84

a=84-23=61

b=84

c=84+16=100

proba: 61+84+100=245