615. Решите уравнение 3 - 4x = 4x - 5 .

Давай решим уравнения. 615. $3 - 4x = 4x - 5 \Rightarrow -8x = -8 \Rightarrow x = 1$ 616. $4x + 4 = -6x - 5 \Rightarrow 10x = -9 \Rightarrow x = -0.9$ 617. $3x + 3 = -2 - 7x \Rightarrow 10x = -5 \Rightarrow x = -0.5$ 618. $-1 - 8x = -10x + 3 \Rightarrow 2x = 4 \Rightarrow x = 2$ 619. $7 - 6x = -4x - 6 \Rightarrow -2x = -13 \Rightarrow x = 6.5$ 620. $-7x - 7 = 4 - 8x \Rightarrow x = 11$ 621. $9 - 4x = -9x - 4 \Rightarrow 5x = -13 \Rightarrow x = -2.6$ 622. $3 - 4x = -8x + 9 \Rightarrow 4x = 6 \Rightarrow x = 1.5$ 623. $2(x - 7) = 3 \Rightarrow 2x - 14 = 3 \Rightarrow 2x = 17 \Rightarrow x = 8.5$ 624. $5(x - 9) = -2 \Rightarrow 5x - 45 = -2 \Rightarrow 5x = 43 \Rightarrow x = 8.6$ 625. $3 = 4(x + 2) \Rightarrow 3 = 4x + 8 \Rightarrow 4x = -5 \Rightarrow x = -1.25$ 626. $-7 = 5(x + 5) \Rightarrow -7 = 5x + 25 \Rightarrow 5x = -32 \Rightarrow x = -6.4$ 627. $9 = 5(x + 9) \Rightarrow 9 = 5x + 45 \Rightarrow 5x = -36 \Rightarrow x = -7.2$ 628. $7(x - 1) = 3x \Rightarrow 7x - 7 = 3x \Rightarrow 4x = 7 \Rightarrow x = 1.75$ 629. $9(x + 7) = -x \Rightarrow 9x + 63 = -x \Rightarrow 10x = -63 \Rightarrow x = -6.3$ 630. $5(x - 3) = 4x \Rightarrow 5x - 15 = 4x \Rightarrow x = 15$ 631. $4(x + 6) = x \Rightarrow 4x + 24 = x \Rightarrow 3x = -24 \Rightarrow x = -8$ 632. $-x = 4(6 + x) \Rightarrow -x = 24 + 4x \Rightarrow -5x = 24 \Rightarrow x = -4.8$ 633. $7(-3 + 2x) = -6x - 1 \Rightarrow -21 + 14x = -6x - 1 \Rightarrow 20x = 20 \Rightarrow x = 1$ 634. $2(7 + 9x) = -6x + 2 \Rightarrow 14 + 18x = -6x + 2 \Rightarrow 24x = -12 \Rightarrow x = -0.5$ 635. $6(5 - 3x) = -8x - 7 \Rightarrow 30 - 18x = -8x - 7 \Rightarrow -10x = -37 \Rightarrow x = 3.7$ 636. $6(9 + 4x) = 4x - 4 \Rightarrow 54 + 24x = 4x - 4 \Rightarrow 20x = -58 \Rightarrow x = -2.9$ 637. $4(2 - 3x) = -7x + 10 \Rightarrow 8 - 12x = -7x + 10 \Rightarrow -5x = 2 \Rightarrow x = -0.4$ 638. $-4(5 - 4x) = x + 1 \Rightarrow -20 + 16x = x + 1 \Rightarrow 15x = 21 \Rightarrow x = 1.4$ 639. $-4(-7 + 6x) = -9x - 5 \Rightarrow 28 - 24x = -9x - 5 \Rightarrow -15x = -33 \Rightarrow x = 2.2$