помогите решить уравнения 70×2+х=3500+120, х+2400:60=310+5000, 9000:30-х=300-130...

July 2022 2 16 Report

помогите решить уравнения 70×2+х=3500+120, х+2400:60=310+5000, 9000:30-х=300-130, 7500×2-х=1250×2

Verified answer

70×2+x=3500+120
140+×=3620
×=3620-140
x=3480

x+2400:60=310+5000
x+40=5310
x=5310-40
x=5270

9000:30-x=300-130
300-x=170
x=300-170
x=130

7500×2-x=1250×2
15000-x=2500
x=15000-2500
x=12500

3 votes Thanks 5

lubasik27

Verified answer

70*2+х=3500+120
х=3620-140
х=3480
Проверка:
70*2+3480=3500+120
140+3480=3620
3620=3620

х+2400:60=310+5000
х=5310-40
х=5270
Проверка:
5270+2400:60=310+5000
5270+40=5310
5310=5310

9000:30-х=300-130
300-х=170
-х=170-300
-х=-130
х=130
Проверка:
9000:30-130=300-130
300-130=170
170=170

7500*2-х=1250*2
-х=2500-15000
-х=-12500
х=12500
Проверка:
7500*2-12500=1250*2
15000-12500=2500
2500=2500

1 votes Thanks 5

Answers & Comments

Verified answer

Verified answer

рекомендуемые вопросы

Helpful Links

Helpful Social