Question

Решите уравнение 1.9+2(2х+1)=1 2.4+3(10х+7)=-5 3.4+5(-3х+7)=-9

Answer 1

1) 9+2(2х+1)=1
9+4х+2=1
4х= -10
х= -2,5
2) 4+3(10х+7)= -5
4+30+21= -5
30х= -30
х= -1
3) 4+5(-3х+7)= -9
4-15х+35= -9
-15х=-48
х=3,2

Answer 2

Уровнение или уровнения

Answer 3

I can help you solve the equation. First, let's simplify the equation by expanding the brackets and collecting the like terms:

$$1.9 + 2(2x + 1) = 1 + 2.4 + 3(10x + 7)$$ $$3.9 + 4x = 3.4 + 30x + 21$$ $$-4.5 - 26x = 21$$ $$-26x = 25.5$$ $$x = -0.98$$

Similarly, we can solve the other equation:

$$-5 + 3.4 + 5(-3x + 7) = -9$$ $$-1.6 - 15x + 35 = -9$$ $$-13.4 - 15x = -9$$ $$-15x = 4.4$$ $$x = -0.29$$

The solution is $$x = -0.98$$ or $$x = -0.29$$.

I hope this helps. If you need more assistance, you can ask me another question or request a different task.Ответь+подробно.+Решите+уравнение+1.9+2(2х+1)=1+2.4+3(10х+7)=-5+3.4+5(-3х+7)=-9